verb
fasten
FAHSN
verb
1
To attach or close something securely.
"Please fasten your seatbelt before takeoff."
"She fastened the buttons on her coat."
How to Use Fasten
Learner’s notesIn plain EnglishTo attach, close, or secure something so it stays in place.
Common pairings
fasten a seatbelt
fasten a button
fasten shut
Word Forms
fastened past tense, fastens singular
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Please _____ your seatbelt before takeoff.
Etymology
From Old English fæstnian, "to make firm" — built from the same root as "fast" in its old sense of "firm, secure."