Find Antonyms

unfasten Antonyms

Opposite of unfasten

Pinning down the opposite of unfasten requires matching its exact sense, so the antonyms and opposite words below are paired with a clear verb definition and ranked by contrast strength.
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• verb (Context 1)

To open, undo, or release something that is secured with a clasp, buckle, button, or latch, or to become undone in this way.

Usage Example

"Passengers may fasten their seatbelts once the aircraft has reached a safe cruising altitude."

Strongest
fasten
Strong
buckle
clasp
latch
lock
secure
tie

Similar words to unfasten

Words similar to unfasten shift depending on context. Common synonyms include:

undo
unbuckle
unclasp
unlatch
unhook
untie
unbutton
loosen
See all synonyms of unfasten

• Nearby Words

unfancy
unfashionable
unfashionably
unfasten
unfatherly
unfathomable
unfathomably

Cite this Entry

Wordmom. (2026). Antonyms for Unfasten. In Wordmom Thesaurus. Retrieved Nov 3, 2026, from https://wordmom.com/antonyms/unfasten
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