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  • do
    do
    verb (used with object)
    to perform (an act, duty, role, etc.).
  • do.
    do.
    abbreviation
    ditto.
  • D/O
    D/O
    delivery order.
  • D.O.
    D.O.
    abbreviation
    direct object. Also d.o.
  • DO
    DO
    abbreviation
    Doctor of Optometry
Synonyms

do

1 American  
[doo, doo, duh] / du, dʊ, də /

verb (used with object)

does, present (3rd person singular) did, past done, past participle doing present participle
  1. to perform (an act, duty, role, etc.).

    Do nothing until you hear the bell.

    Synonyms:
    act
  2. to execute (a piece or amount of work).

    to do a hauling job.

  3. to accomplish; finish; complete.

    He has already done his homework.

  4. to put forth; exert.

    Do your best.

  5. to be the cause of (good, harm, credit, etc.); bring about; effect.

  6. to render, give, or pay (homage, justice, etc.).

  7. to deal with, fix, clean, arrange, move, etc., (anything) as the case may require.

    to do the dishes.

  8. to travel; traverse.

    We did 30 miles today.

  9. to serve; suffice for.

    This will do us for the present.

  10. to condone or approve, as by custom or practice.

    That sort of thing simply isn't done.

  11. to travel at the rate of (a specified speed).

    He was doing 80 when they arrested him.

  12. to make or prepare.

    I'll do the salad.

  13. to serve (a term of time) in prison, or, sometimes, in office.

  14. to create, form, or bring into being.

    She does wonderful oil portraits.

  15. to translate into or change the form or language of.

    MGM did the book into a movie.

  16. to study or work at or in the field of.

    I have to do my math tonight.

  17. to explore or travel through as a sightseer.

    They did Greece in three weeks.

  18. (used with a pronoun, as it or that, or with a general noun, as thing, that refers to a previously mentioned action).

    You were supposed to write thank-you letters; do it before tomorrow, please.

  19. Informal. to wear out; exhaust; tire.

    That last set of tennis did me.

  20. Informal. to cheat, trick, or take advantage of.

    That crooked dealer did him for $500 at poker.

  21. Informal. to attend or participate in.

    Let's do lunch next week.

  22. Slang. to use (a drug or drugs), especially habitually.

    The police report said he was doing cocaine.

  23. Slang. to rob; steal from.

    The law got him for doing a lot of banks.

  24. Slang: Vulgar. to have sex with.

  25. Informal. (usually in the negative) to act in accordance with expectations associated with (something specified).

    Just ignore her insults—she doesn’t do polite.


verb (used without object)

does, present (3rd person singular) did, past done, past participle doing present participle
  1. to act or conduct oneself; be in action; behave.

  2. to proceed.

    to do wisely.

  3. to get along; fare; manage.

    to do without an automobile.

  4. to be in health, as specified.

    Mother and child are doing fine.

  5. to serve or be satisfactory, as for the purpose; be enough; suffice.

    Will this do?

  6. to finish or be finished.

  7. to happen; take place; transpire.

    What's doing at the office?

  8. (used as a substitute to avoid repetition of a verb or full verb expression).

    I think as you do.

auxiliary verb

does, present (3rd person singular) did, past done, past participle doing present participle
  1. (used in interrogative, negative, and inverted constructions).

    Do you like music? I don't care. Seldom do we witness such catastrophes.

  2. Archaic. (used in imperatives with you or thou expressed; and occasionally as a metric filler in verse).

    Do thou hasten to the king's side. The wind did blow, the rain did fall.

  3. (used to lend emphasis to a principal verb).

    Do visit us!

noun

dos, plural do's plural
  1. Informal. a burst of frenzied activity; action; commotion.

  2. Informal. a hairdo or hair styling.

  3. British Slang. a swindle; hoax.

  4. Informal. a festive social gathering; party.

verb phrase

  1. do without

    1. to forgo; dispense with.

    2. to dispense with the thing mentioned.

      The store doesn't have any, so you'll have to do without.

  2. do in

    1. to kill, especially to murder.

    2. to injure gravely or exhaust; wear out; ruin.

      The tropical climate did them in.

    3. to cheat or swindle.

      He was done in by an unscrupulous broker.

  3. do up

    1. to wrap and tie up.

    2. to pin up or arrange (the hair).

    3. to renovate; launder; clean.

    4. to wear out; tire.

    5. to fasten.

      Do up your coat.

    6. to dress.

      The children were all done up in funny costumes.

  4. do for

    1. to cause the defeat, ruin, or death of.

    2. Chiefly British. to cook and keep house for; manage or provide for.

  5. do over to redecorate.

  6. do with to gain advantage or benefit from; make use of.

    I could do with more leisure time.

  7. do by to deal with; treat.

    He had always done well by his family.

idioms

  1. do time, to serve a term in prison.

    It's hard to get a decent job once you've done time.

  2. dos and don'ts, customs, rules, or regulations.

    The dos and don'ts of polite manners are easy to learn.

  3. do one's (own) thing. thing.

  4. do a number on (someone). number.

  5. have to do with. have.

  6. do one's number. number.

  7. do away with,

    1. to put an end to; abolish.

    2. to kill.

  8. do or die, to make a supreme effort.

  9. make do, to get along with what is at hand, despite its inadequacy.

    I can't afford a new coat so I have to make do with this one.

  10. do one proud. proud.

  11. do to death. death.

  12. do out of, to swindle; cheat.

    A furniture store did me out of several hundred dollars.

do 2 American  
[doh] / doʊ /

noun

Music.
dos plural
  1. the syllable used for the first tone or keynote of a diatonic scale.

  2. (in the fixed system of solmization) the tone C.


do. 3 American  

abbreviation

  1. ditto.


D/O 4 American  
Or d.o.
  1. delivery order.


D.O. 5 American  
Or DO

abbreviation

  1. direct object. Also d.o.

  2. Doctor of Optometry.

  3. Doctor of Osteopathic Medicine.


do 1 British  
/ duː, də, dʊ /

verb

  1. to perform or complete (a deed or action)

    to do a portrait

    the work is done

  2. to serve the needs of; be suitable for (a person, situation, etc); suffice

    there isn't much food, but it'll do for the two of us

  3. (tr) to arrange or fix

    you should do the garden now

  4. (tr) to prepare or provide; serve

    this restaurant doesn't do lunch on Sundays

  5. (tr) to make tidy, elegant, ready, etc, as by arranging or adorning

    to do one's hair

  6. (tr) to improve (esp in the phrase do something to or for )

  7. (tr) to find an answer to (a problem or puzzle)

  8. (tr) to translate or adapt the form or language of

    the book was done into a play

  9. (intr) to conduct oneself

    do as you please

  10. (intr) to fare or manage

    how are you doing these days?

  11. (tr) to cause or produce

    complaints do nothing to help

  12. (tr) to give or render

    your portrait doesn't do you justice

    do me a favour

  13. (tr) to work at, esp as a course of study or a profession

    he is doing chemistry

    what do you do for a living?

  14. (tr) to perform (a play, etc); act

    they are doing ``Hamlet'' next week

  15. (tr) to travel at a specified speed, esp as a maximum

    this car will do 120 mph

  16. (tr) to travel or traverse (a distance)

    we did 15 miles on our walk

  17. (takes an infinitive without to) used as an auxiliary before the subject of an interrogative sentence as a way of forming a question

    do you agree?

    when did John go out?

  18. (takes an infinitive without to) used as an auxiliary to intensify positive statements and commands

    I do like your new house

    do hurry!

  19. (takes an infinitive without to) used as an auxiliary before a negative adverb to form negative statements or commands

    he does not like cheese

    do not leave me here alone!

  20. (takes an infinitive without to) used as an auxiliary in inverted constructions

    little did he realize that

    only rarely does he come in before ten o'clock

  21. used as an auxiliary to replace an earlier verb or verb phrase to avoid repetition

    he likes you as much as I do

  22. informal (tr) to visit or explore as a sightseer or tourist

    to do Westminster Abbey

  23. (tr) to wear out; exhaust

  24. (intr) to happen (esp in the phrase nothing doing )

  25. slang (tr) to serve (a period of time) as a prison sentence

    he's doing three years for burglary

    he's doing time

  26. informal (tr) to cheat or swindle

  27. slang (tr) to rob

    they did three shops last night

  28. slang (tr)

    1. to arrest

    2. to convict of a crime

  29. informal (tr) to lose or spend (money) completely

  30. slang (tr) to treat violently; assault

  31. slang (tr) to take or use (a drug)

  32. taboo (tr) (of a male) to have sexual intercourse with

  33. (tr) to partake in (a meal)

    let's do lunch

  34. informal to act like; imitate

    he's a good mimic – he can do all his friends well

  35. to make a final or supreme effort

  36. a conventional formula when being introduced

  37. to manage with whatever is available

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. slang an act or instance of cheating or swindling

  2. informal a formal or festive gathering; party

  3. informal those things that should or should not be done; rules

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
DO 2 British  

abbreviation

  1. Doctor of Optometry

  2. Doctor of Osteopathy

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

D/O 3 British  

abbreviation

  1. delivery order

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

do 4 British  
/ dəʊ /

noun

  1. a variant spelling of doh 1

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

do 5 British  

abbreviation

  1. Dominican Republic

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

do. 6 British  

abbreviation

  1. ditto

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Synonym Usage

Do, accomplish, achieve mean to bring some action to a conclusion. Do is the general word: He did a great deal of hard work. Accomplish and achieve both connote successful completion of an undertaking. Accomplish emphasizes attaining a desired goal through effort, skill, and perseverance: to accomplish what one has hoped for. Achieve emphasizes accomplishing something important, excellent, or great: to achieve a major breakthrough.

Other Word Forms

Inflected Forms

Nouns

Participles

Conjugated Forms

Present

Past

Future

Etymology

Origin of do1

First recorded before 900; Middle English, Old English dōn; cognate with Dutch doen, German tun; akin to Latin -dere “to put,” facere “to make, do,” Greek tithénai “to set, put,” Sanskrit dadhāti “(he) puts”

Origin of do2

First recorded in 1745–55; from Italian, inverted variant of ut; see origin at gamut

Explanation

To do is to act, perform, or undertake. When you do chores, you engage in the activity of cleaning the kitchen or taking out the trash. Do is one of the most frequently used verbs in English. You do many things in a typical day: you might do the dishes, do your job, and later on, do your taxes. If you meet an old-fashioned gentleman, he might say, "How do you do?" essentially meaning, "Hello." After a difficult test, your friend could ask, "How did you do?" You can also do as you please, or just do nothing all day long.

Keep Reading on Vocabulary.com

Vocabulary lists containing do

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

“We do have to realize he is a wild and free eagle, and it is up to Shadow what direction he goes,” the post states.

From Los Angeles Times Jul. 24, 2026

But in this case, the company had removed the safeguards so it could see what the models could do when unharnessed.

From The Wall Street Journal Jul. 24, 2026

Others appeared more understanding: “People need to realize these are eagles ... and will do what instincts tell them to. And everything will be fine, regardless of what paths they each may take.”

From Los Angeles Times Jul. 24, 2026

Normally OpenAI’s products wouldn’t do the kind of hacking that ExploitGym requires.

From The Wall Street Journal Jul. 24, 2026

Reading is something I can do that Father and Grandpa can’t.

From "Will’s Race for Home" by Jewell Parker Rhodes

Marius has a son he no longer sees, he admitted: "I don't want to expose him to the bad things I do. I don't want him to follow in my shoes."

From Barron's Jul. 13, 2026

She captioned the clip, “Do I want to RV? Yes, yes I do. I’ll bring the string lights and tea!!”

From MarketWatch Jul. 8, 2026

“But I think that’s also where I built this armor that I have — this knowingness of why I do what I do. It’s how I have this grit to stick to it.”

From Los Angeles Times Jun. 24, 2026

"It's our government that must decide what to do. All we can do is watch."

From BBC Jun. 20, 2026

“I do. And—I hesitate to get between siblings—but there’s a chance your brother may have seen her.”

From "The Bletchley Riddle" by Ruta Sepetys and Steve Sheinkin

"Robotic-assisted surgery has the potential to change the way surgeons think about revision knee replacement," said Matthew Bullock, D.O., associate professor of orthopaedic surgery and co-author on the study.

From Science Daily Jan. 17, 2024

But the dance instructor has a TikTok following of his own, and the D.O. is also a Lululemon ambassador.

From New York Times Oct. 27, 2021

Yet each year thousands of graduates emerge from medical schools with a virtually useless M.D. or D.O.; without residency experience, they do not qualify for licensure in any state.

From Seattle Times Feb. 22, 2021

Robertson touts the transition as a way to follow the industry by going more digital, and the D.O. has an active web site and social media presence.

From Washington Times Nov. 4, 2019

It is of the greatest importance that there should always be time allowed for personal intercourse between the D.O. and the Officers present.

From The Authoritative Life of General William Booth by Railton, George S. (George Scott)

“Watch what we DO, not what we SAY.”

From Barron's Dec. 8, 2025

The website can also be used by people to note that they expressly DO wish to be a donor.

From BBC Oct. 12, 2025

Another tweeted, "People DO realize not every movie, song, game or book are specifically made for them right?"

From Salon Apr. 2, 2024

We have to make sure they DO get it.”

From Seattle Times Nov. 10, 2023

TO DO: put T-N-T on notice that the Frida Freebies were a wrap.

From "Patina" by Jason Reynolds

The DMA comes with a list of do's and don'ts for the world's biggest digital platforms in an attempt to keep them in check and create an open online space.

From Barron's Jul. 8, 2026

Across schools, the bigger fix would be more precision from administrators on AI do’s and don’ts, Anand said.

From MarketWatch Jun. 22, 2026

Here are some do’s and don’ts to remember when using AI for performance reviews:

From The Wall Street Journal Feb. 24, 2026

A professor at Kabul University told the BBC that under such circumstances, they are forced to prepare textbook chapters themselves, taking into account the do's and don'ts imposed by the Taliban government.

From BBC Sep. 18, 2025

After practice, everybody came over to me, doing the best they could to hold their words in but sending me all their what did you do's with their eyes.

From "Ghost" by Jason Reynolds

The helicopters collided in Recreio dos Bandeirantes, a western suburb of Rio de Janeiro, then plummeted into the parking lot of an electric car dealership, setting ablaze around 20 cars, firefighters said.

From Barron's Jun. 14, 2026

The researchers are now testing moringa seed extract on water collected from the Paraíba do Sul River, which supplies São José dos Campos.

From Science Daily Apr. 20, 2026

Yet tourists might find themselves entirely alone at Cromeleque dos Almendres which along with the smaller and less-visited Cromeleque de Vale Maria do Meio are mysterious mini-Stonehenge circles of planted stone monoliths.

From The Wall Street Journal Mar. 27, 2026

"We have tried to get him to the dos we have had, but nobody can get hold of him," he said.

From BBC Jan. 7, 2026

Befores and afters, dos and don’ts, Farewells and hellos and good-byes.

From "Woe Is I" by Patricia T. O'Conner

Caballero’s steadfast commitment to his unorthodox approach does occasionally backfire.

From The Wall Street Journal Jul. 23, 2026

Ludoquist is a licenced premises, but Smith said it does not meet the government definition of a "pub", so he fears being missed by the business rates package.

From BBC Jul. 23, 2026

What does it mean to you to have some of those early Warped Tour bands like that on the bill again?

From Los Angeles Times Jul. 23, 2026

If it does, Saudi Arabia probably “has an interest in keeping open the possibility of having some nukes as a deterrent” of its own, Fred says.

From Slate Jul. 23, 2026

I have told her a million times that she can call me Lala, but she never does.

From "Split the Sky" by Marie Arnold

How long did their unsupervised spree actually last?

From The Wall Street Journal Jul. 24, 2026

When a string of Russian strikes on military training grounds last year killed 12 Ukrainian soldiers, the general who commanded them did something unusual: He took responsibility and resigned.

From The Wall Street Journal Jul. 24, 2026

"There was shock and panic initially," Hannah, who did not want to disclose her precise salary, says.

From BBC Jul. 23, 2026

He did not give details about how the plane would be "maxed out."

From Barron's Jul. 23, 2026

And now I look even more like she did when she was my age.

From "Split the Sky" by Marie Arnold

The prime minister has said that "no prisoners will be let out under this policy until we have conducted an urgent review and done everything we can to minimise risk to the public."

From BBC Jul. 23, 2026

“It’s OK to be a little less capital-efficient if we get things done sooner.”

From MarketWatch Jul. 23, 2026

“We did something that hasn’t been done in over 30 years, going back-to-back World Series champions, and we are going for a three-peat,” Roberts said.

From Los Angeles Times Jul. 23, 2026

"In early 2018, we began examining what needed to be done and how to structure the company to prepare it for the next generation."

From Barron's Jul. 23, 2026

Even so, when I finished painting the last of the doorjambs and caulking around the new sinks and tubs that Dad and Jonah installed last weekend, I was happy to be done.

From "Red Flags and Butterflies" by Sheryl Azzam

"My people know who I am, and hopefully, I'm doing them proud and making room for young boys and girls in our world to have a better future than we did."

From Barron's Jul. 23, 2026

Here we arrive at the heart of things, the concern that arises whenever some new technology threatens to uproot the old ways of doing things.

From The Wall Street Journal Jul. 23, 2026

A day later Cardiff Rugby academy players found the tub while doing volunteering work, and handed it to park officials.

From BBC Jul. 23, 2026

You’ve always had your own way of doing things that created the culture of Warped Tour.

From Los Angeles Times Jul. 23, 2026

“Who are you? Why are you doing this?”—as though cruelty and callousness were the norm, ordinary decency the marvel.

From "The Hiding Place" by Corrie ten Boom

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