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  • OK
    OK
    adjective
    all right; proceeding normally; satisfactory or under control.
  • O.K.
    O.K.
    an expression of approval, agreement, etc
Synonyms

OK

1 American  
[oh-key, oh-key, oh-key] / ˈoʊˈkeɪ, ˌoʊˈkeɪ, ˈoʊˌkeɪ /
Also O.K., or okay

adjective

  1. all right; proceeding normally; satisfactory or under control.

    Things are OK at the moment.

  2. correct, permissible, or acceptable; meeting standards.

    Is this suit OK to wear to a formal party?

  3. doing well or in good health; managing adequately.

    She's been OK since the operation.

  4. adequate but unexceptional or unremarkable; tolerable.

    The job they did was OK, nothing more.

  5. estimable, dependable, or trustworthy; likable.

    an OK person.


adverb

  1. all right; well enough; successfully; fine.

    She'll manage OK on her own.

    He sings OK, but he can't tap dance.

  2. (used as an affirmative response) yes; surely.

  3. (used as an interrogative or interrogative tag) all right?; do you agree?

interjection

  1. (used to express agreement, understanding, acceptance, or the like).

    OK, I'll get it for you.

  2. (used as an introductory or transitional expression).

    OK, now where were we?

noun

OK's plural
  1. an approval, agreement, or endorsement.

    They gave their OK to her leave of absence.

verb (used with object)

OKs, present (3rd person singular) OK's, present (3rd person singular) OKed, past participle, past OK'd, past participle, past OKing, present participle OK'ing present participle
  1. to put one's endorsement on or indicate one's approval of (a request, piece of copy, bank check, etc.); authorize; initial.

    Would you OK my application?

OK 2 American  

abbreviation

  1. Oklahoma (approved especially for use with zip code).


O.K. 1 British  
/ ˌəʊˈkeɪ /
  1. an expression of approval, agreement, etc

"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

adjective

  1. in good or satisfactory condition

  2. permissable

    is it O.K. if I go home now?

  3. acceptable but not outstanding

    the party was O.K.

"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

verb

  1. (tr) to approve or endorse

"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. approval or agreement

"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
OK 2 British  

abbreviation

  1. Oklahoma

"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

Usage

And is OK in the dictionary? OK is a word. The term OK may also be spelled okay. There is confusion as to whether OK is a word because it is informal, looks like an acronym, and is spelled with all capital letters. However, none of these elements disqualify OK from being a valid word.

Other Word Forms

Inflected Forms

Nouns

Participles

Conjugated Forms

Present

Past

Future

Etymology

Origin of OK

Initials of a facetious folk phonetic spelling, i.e., oll or orl korrect representing all correct, first attested in Boston, Massachusetts, in 1839, then used in 1840 by Democrat partisans of Martin Van Buren during his election campaign, who allegedly named their organization, the O.K. Club, in allusion to the initials of Old Kinderhook, Van Buren's nickname, derived from his birthplace, Kinderhook, New York

Explanation

Anything that's ok is all right or fine. A perfectly ok answer when your dad asks how your homework is going is "Ok." If something's ok, it's not terrible, but it's not wonderful either — it's simply ok. You can use this informal word to ask if something's acceptable: "Hey, is it ok if I borrow your car?" It's also a good way to check up on someone's well-being: "You look sad today; are you ok?" Ok is the only known example that's still in use of a 19th century slang trend of abbreviating deliberate misspellings. Ok comes from "oll korrect."

Keep Reading on Vocabulary.com

Vocabulary lists containing ok

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:

"I just turned to Matt's family and said, 'if I can sort this, is everybody OK?'"

From BBC Jul. 23, 2026

"It's OK to be a little less capital efficient if we get things done sooner."

From Barron's Jul. 22, 2026

That seemed OK with the packed crowd that watched him headline Saturday night, rolling through all the Stooges and solo classics that made him the king of the underground.

From Los Angeles Times Jul. 21, 2026

These changing rules have prompted myriad workplace debates: Is it OK to wear shorts to an interview?

From MarketWatch Jul. 21, 2026

“No, really. Are you feeling OK? Olly told me—” “He told you I’m sick.”

From "Everything, Everything" by Nicola Yoon

By the way, the Wolford ruling doesn’t turn Hawaii into the O.K.

From The Wall Street Journal Jun. 26, 2026

Which brings us to Candlestick Park, the O.K.

From Salon Jun. 26, 2026

Other classics he was a part of include 1957’s “Gunfight at the O.K. Corral” and “The Sons of Katie Elder” in 1965.

From Los Angeles Times Nov. 27, 2024

Almost half of the 58 starters failed to finish on the O.K. course, which was set by one of the Italian coaches, Paolo Stefanini.

From Seattle Times Dec. 17, 2023

“If it’s only a bird, I suppose it will be O.K. if you keep him in a cage.”

From "Mr. Popper's Penguins" by Florence Atwater and Richard Atwater

Now, 2019 OK’s brief but alarming appearance is sure to nudge that discussion forward.

From Slate Jul. 29, 2019

With so much thought given to OK's slogans and packaging, what about the reddish-brown beverage itself?

From Time Magazine Archive

Otherwise, you cannot take those steps unless a person with power of attorney OKs it.

From MarketWatch Nov. 17, 2025

While the Food and Drug Administration OKs vaccines, it’s the CDC that decides who should get them.

From Seattle Times Jun. 18, 2022

If all those entities give their OKs, vaccinations should begin in earnest as early as June 21, Jha said.

From Washington Times Jun. 9, 2022

I heard a rumor they may add a number for Ms. Rigg to sing after the curtain call for while the Tony voters are there, if Alan Jay Lerner OKs it.

From New York Times May 1, 2018

If Brown OKs the Legislature’s proposal, the income limit would rise to $4,358 a month, or $52,298 a year, according to the nonprofit California Budget & Policy Center.

From Los Angeles Times Jun. 2, 2017

The House version required both parents have a Social Security number, but the Senate OK'd a requirement of only one parent.

From BBC Jul. 3, 2025

JetBlue swooped in for Spirit with a $3.8 billion deal, which shareholders OK’d in October 2022.

From Slate Oct. 15, 2024

Three other oncolytic viruses were OK’d outside the U.S., most recently a treatment for glioma brain tumors was approved in Japan in 2021.

From Science Magazine Dec. 4, 2023

Since 2020, the state has OK’d rules that would ban the sale of new gas-powered cars, lawn equipment and trucks by the middle of the next decade.

From Seattle Times Jun. 16, 2023

His chief OK'd a trip and within an hour Lieutenant Brown and Captain Davidson were flying to Tacoma in an Air Force B-25.

From The Report on Unidentified Flying Objects by Ruppelt, Edward J.

It also OKed the merger of BB&T and SunTrust, bringing more concentration in the sector.

From Slate Sep. 3, 2021

The Centers for Disease Control and Prevention mostly OKed this reopening, with the provision that everyone should mask up in schools and, if 12 or older, be vaccinated against COVID-19.

From Los Angeles Times Aug. 17, 2021

Lygo describes himself as Emperor Nero, giving the final thumbs up or down, and Webb-Lamb is in a similar position: both hear pitches after they’ve already been OKed by commissioning editors further down the chain.

From The Guardian Mar. 6, 2021

The ordinance was initially approved June 12 and, if OKed after a second reading Tuesday night, would take effect in 30 days.

From Los Angeles Times Jun. 26, 2018

To enter the press suite you need to have been previously OKed by the press officer and to work for an approved media organisation.

From The Guardian Mar. 17, 2011

U.S. regulators have approved a new pneumonia vaccine from Merck, more than a month after OK’ing an improved version of rival Pfizer’s shot.

From Seattle Times Jul. 16, 2021

The measure cleared the Ohio Senate by just three votes, and the House followed by OK’ing Senate changes 67-28.

From Salon May 25, 2016

It did so not by setting an aspirational goal for two or three decades from now, but by OKing a big construction project.

From Slate Sep. 1, 2016

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