attach
Americanverb (used with object)
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to fasten or affix; join; connect.
to attach a photograph to an application with a staple.
- Antonyms:
- detach
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to join in action or function; make part of.
to attach oneself to a group.
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Military. to place on temporary duty with or in assistance to a military unit.
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to include as a quality or condition of something.
One proviso is attached to this legacy.
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to assign or attribute.
to attach significance to a gesture.
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to bind by ties of affection or regard.
You always attach yourself to people who end up hurting you.
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Law. to take (persons or property) by legal authority.
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Obsolete. to lay hold of; seize.
verb (used without object)
verb
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to join, fasten, or connect
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(reflexive or passive) to become associated with or join, as in a business or other venture
he attached himself to the expedition
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to be inherent (in) or connected (with)
responsibility attaches to the job
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to attribute or ascribe
to attach importance to an event
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to include or append, esp as a condition
a proviso is attached to the contract
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(usually passive) military to place on temporary duty with another unit
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(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
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to appoint officially
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law to arrest or take (a person, property, etc) with lawful authority
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obsolete to seize
Other Word Forms
Derived Forms
Inflected Forms
Participles
Conjugated Forms
Present
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attachsimple
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attachessimple
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have attachedperfect
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has attachedperfect
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am attachingprogressive
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are attachingprogressive
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is attachingprogressive
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have been attachingperfect progressive
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has been attachingperfect progressive
Past
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attachedsimple
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had attachedperfect
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was attachingprogressive
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were attachingprogressive
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had been attachingperfect progressive
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.
Vocabulary lists containing attach
"Hitching a Ride"
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"The Tragedy of Romeo and Juliet," Vocabulary from Act 5
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"Growing Together" and "When I Grow Up"
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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
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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
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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
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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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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.