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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:

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

Biofilms are groups of bacteria that attach themselves to surfaces, including the inner walls of water pipes.

From Science Daily Jul. 17, 2026

“When you attach multiple boxes, you create a physical gap between the speakers,” Vaissié explained.

From Los Angeles Times Jul. 6, 2026

What’s needed is for the right materials to be found which can withstand the environment and do the lifting and attach to the satellite that pulls the elevator up.

From The Wall Street Journal Jun. 29, 2026

Good grades or not, an image began to attach itself to Bobby.

From "Endgame" by Frank Brady

But he now attaches a condition to that advice.

From MarketWatch Aug. 4, 2026

The system relies on a non destructive, controlled release adhesive that attaches without requiring built in mounting hardware.

From Science Daily Jul. 15, 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

"The state attaches great importance to it. But can the miners who died come back to life?"

From BBC May 31, 2026

He even attaches the link to Poole’s page.

From "Every Day" by David Levithan

ServiceNow is focusing on security at the management layer attached to the platform, allowing companies to streamline threat detection and increase visibility across all AI applications.

From MarketWatch Aug. 2, 2026

The fee would be attached to a program called optional practical training, or OPT, which allows international university graduates to work for one to three years on their student visas.

From The Wall Street Journal Jul. 30, 2026

As the Games approach, when venue designs are finalized, seats are assigned and tickets open to a first-come, first-served basis, there will likely be other chances to buy tickets with special seat assignments attached.

From Los Angeles Times Jul. 29, 2026

They fear that any strings attached to the public money will make many private schools balk at taking it.

From Salon Jul. 27, 2026

Ropes were attached inside the ship and a bunch of strong men pulled on them.

From "The (Mostly) True Story of Cleopatra's Needle" by Dan Gutman

It is extending the border fence out to sea, attaching long lines of orange buoys to the jetty which ships will then patrol to deter future swimmers.

From BBC Aug. 2, 2026

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

From Slate Jul. 14, 2026

There is a difference, albeit a fine one, between attaching strings and asking your children to be accountable for how they use the money you give them by discussing their dreams and financial goals.

From MarketWatch Jun. 19, 2026

At a Karur textile factory, busy with workers attaching labels to caps and ironing cloth bags, AFP saw eight people wearing head cameras and smart glasses supplied by Objectways.

From Barron's Jun. 11, 2026

Besides the countersunk nozzle, Mr. Caton showed off his new design for attaching the fins to the casement.

From "October Sky" by Homer Hickam

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