CEFR B1

unfasten

verb

Meaning

To release something that has been fastened, closed, or secured, allowing it to open or become loose.

Examples

  • She carefully unfastened the clasp of her necklace before putting it away.
  • Please unfasten your seatbelt when the aircraft has come to a complete stop.

Synonyms: undo, release, unclasp, detach