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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:

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

From Science Daily Jul. 24, 2026

Under the California Vehicle Code, it is illegal for anyone on an e-bike, bicycle, motorcycle or roller skates to attach themselves to another vehicle on a road.

From Los Angeles Times Jul. 18, 2026

Hinduism, Buddhism and Jainism all attach moral significance to voluntary self-denial.

From BBC Jul. 16, 2026

Mikko offered a hypothetical: a manufacturer, he said, could ship a car to Finland without its side mirrors and attach them locally, just enough to make it seem assembled there and dodge the tariff.

From The Wall Street Journal Jul. 7, 2026

It is the size of a large postcard, attached to the black ribbon the way one might attach a gift card to a present.

From "The Night Circus" by Erin Morgenstern

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

That “Supergirl” was intergalactically rotten, so no legacy of great expectation attaches to the new film of the same name.

From The Wall Street Journal Jun. 25, 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 female Tiphia, finding a beetle grub in the soil, injects a paralyzing fluid and attaches a single egg to the undersurface of the grub.

From "Silent Spring" by Rachel Carson

Every few minutes, I peeled it from my skin and transferred it to the other side, where it promptly attached itself again.

From Salon Aug. 4, 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

“There is no cash flow attached to them and they could easily be reversed,” Windsor wrote of the equity impacts.

From MarketWatch Jul. 23, 2026

For effect, she gave a little shake on the leash ends of the TOT, just as if they were a set of reins attached to a pony’s bridle.

From "The Unseen Guest" by Maryrose Wood

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

Serotonin communicates by attaching to receptors on a cell's surface.

From Science Daily Jul. 12, 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

She tugs wires toward her, attaching them to me, to her, to the machine behind her.

From "Divergent" by Veronica Roth

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