US /ˈfæsn̩/ UK /ˈfɑːsn̩/
verb Freq #12529

Meanings

  1. 1
    verb

    To join or attach two things firmly together.

    Please fasten your seatbelt before the plane takes off.

  2. 2
    verb

    To close or become closed and held in place.

    This dress fastens at the back with a zip.

Thesaurus

Synonyms
1 verb · to join or attach two... fix
Word family
Forms fastenedfasteningfastens
Derived forms bedfastbreastfastcolorfastcopperfastencragfastfastfastenablefastenerfasteninghandfastheadfastholdfast

Etymology

From Middle English fastenen, from Old English fæstnian, from Proto-West Germanic *fastinōn (“to secure, fasten”). Equivalent to fast + -en.

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