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attach

American  
[uh-tach] / əˈtætʃ /

verb (used with object)

  • attaches,
    present (3rd person singular)
  • attached,
    past participle,  past
  • attaching
    present participle
  1. to fasten or affix; join; connect.

    to attach a photograph to an application with a staple.

    Synonyms:
    annex, add, append, subjoin
    Antonyms:
    detach
  2. to join in action or function; make part of.

    to attach oneself to a group.

  3. Military. to place on temporary duty with or in assistance to a military unit.

  4. to include as a quality or condition of something.

    One proviso is attached to this legacy.

  5. to assign or attribute.

    to attach significance to a gesture.

  6. to bind by ties of affection or regard.

    You always attach yourself to people who end up hurting you.

  7. Law. to take (persons or property) by legal authority.

  8. Obsolete. to lay hold of; seize.


verb (used without object)

  • attaches,
    present (3rd person singular)
  • attached,
    past participle,  past
  • attaching
    present participle
  1. to adhere; pertain; belong (usually followed by to orupon ).

    No blame attaches to him.

attach British  
/ əˈtætʃ /

verb

  1. to join, fasten, or connect

  2. (reflexive or passive) to become associated with or join, as in a business or other venture

    he attached himself to the expedition

  3. to be inherent (in) or connected (with)

    responsibility attaches to the job

  4. to attribute or ascribe

    to attach importance to an event

  5. to include or append, esp as a condition

    a proviso is attached to the contract

  6. (usually passive) military to place on temporary duty with another unit

  7. (usually passive) to put (a member of an organization) to work in a different unit or agency, either with an expectation of reverting to, or while retaining some part of, the original working arrangement

  8. to appoint officially

  9. law to arrest or take (a person, property, etc) with lawful authority

  10. obsolete to seize

"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

attach Idioms  

Other Word Forms

Derived Forms

Inflected Forms

Participles

Conjugated Forms

Present

Past

Future

Etymology

Origin of attach

First recorded in 1300–50; Middle English atachen, from Anglo-French atacher “to seize,” Old French atachier “to fasten,” alteration of estachier “to fasten with or to a stake,” from estach(e), from Frankish stakka “stake”; cf. stake 1

Explanation

Use the verb attach when you need to join things together, like a stamp that you attach to a letter. When you attach something, you join it or tie it to something else. The word can be used to show physically joining things, like a printer that you attach to your computer, or to show a strong personal connection. For example, you can attach yourself to a political cause or to a group of friends.

Keep Reading on Vocabulary.com

Vocabulary lists containing attach

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:

The reason I’m in land is simple: You can’t attach a new data center to the grid anymore.

From MarketWatch Aug. 7, 2026

After nitration occurs, HGF can no longer attach effectively to the receptor.

From Science Daily Jul. 24, 2026

Fasting has long been woven into political life in India, a country where many of the religions its citizens embrace attach moral significance to voluntary self-denial.

From BBC Jul. 20, 2026

Dey De Guzman helps Sabine Hoppner attach her climbing harness at a community event Saturday in Pasadena..

From Los Angeles Times Jul. 19, 2026

I tried to attach myself to the group I had followed down the road, but no luck; no luck for them either, if they did not have their identification-papers with them.

From "The Left Hand of Darkness" by Ursula K. Le Guin

But he now attaches a condition to that advice.

From MarketWatch Aug. 4, 2026

It then attaches to c met receptors on satellite cells, the stem cells responsible for maintaining and repairing skeletal muscle.

From Science Daily Jul. 24, 2026

Doctors suspected she had a potentially fatal pregnancy complication called placenta percreta, where the placenta attaches itself and grows through the uterus.

From BBC Jun. 24, 2026

Roberts described the injury as “discomfort” at the back of Ohtani’s knee, around where the hamstring attaches.

From Los Angeles Times Jun. 12, 2026

She attaches it to some readout device and pumps me up.

From "It’s Kind of a Funny Story" by Ned Vizzini

Seven years after being announced as Marvel’s vampire hunter, two-time Oscar winner Mahershala Ali confirms he is no longer attached to the long-delayed ‘Blade’ reboot.

From Los Angeles Times Aug. 21, 2026

It involved former and serving marines from Plymouth's 30 Commando, Arbroath's 45 Commando and attached Army soldiers.

From BBC Aug. 20, 2026

Personal-finance experts warn that nontraditional payment channels don’t always share the same consumer-safety protections as options linked to traditional banks, and can come with unexpected fees attached.

From MarketWatch Aug. 19, 2026

Silver ions were effective at cutting the DNA, but they also attached nonspecifically and caused precipitation.

From Science Daily Aug. 19, 2026

Finally, while they watched, the judge with the marking pen wrote on one of the blue ribbons and attached it to the worm box.

From "All About Sam" by Lois Lowry

“The brands are realizing that and attaching themselves more to longer-form content.”

From Los Angeles Times Aug. 19, 2026

Blossom said she had been searching for Fargo's owners, attaching a paper collar to him.

From BBC Aug. 9, 2026

It is now considering attaching a $100,000 price tag on international students’ ability to work in the U.S. after they graduate from an American university, The Wall Street Journal has reported.

From The Wall Street Journal Aug. 4, 2026

For most of his career, he found his relevance by attaching himself to those who were.

From Slate Jul. 14, 2026

Since staying at home meant hunger and chores, I began attaching myself to gangs of five-, six- and seven-year-old neighbourhood boys who daily roamed the filthy streets of Alexandra in search of food and adventure.

From "Kaffir Boy: An Autobiography" by Mark Mathabane

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