English dictionary, thesaurus, translations & etymology
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verb

attach

uh-TACH
verb
1
To fasten or connect one thing to another, physically or figuratively.
"Attach the label to the outside of the box."
"She quickly became attached to the idea of moving abroad."
2
To include a file along with an email or other digital message.
"Don't forget to attach your resume to the application email."
3
To come into legal force or effect.
"Liability attaches once the contract is signed."

How to Use Attach

Learner’s notes

In plain EnglishTo join, connect, or include something with something else — physically, emotionally, legally, or digitally.

Common pairings
attach a file attach importance to become attached

Word Forms

attached past tense, attaches singular

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Fill the Gap

Can you complete this real example?

_____ the label to the outside of the box.

Etymology

From Old French atachier, "to fasten," related to a Frankish word for stick or stake — the same root that gives us "attack" and "stake."

Definitions: FreeDict original editorial