ALL meanings of unfasten
un·fas·ten
U u - transitive verb unfasten undo: button, seatbelt 1
- verb with object unfasten to release from or as from fastenings; detach. 1
- verb with object unfasten to undo or open (something fastened). 1
- verb without object unfasten to become unfastened. 1
- verb unfasten If you unfasten something that is closed, tied, or held together, or if you unfasten the thing holding it, you loosen or remove the thing holding it. 0
- verb unfasten to undo, untie, or open or become undone, untied, or opened 0
- verb transitive unfasten to open or make loose; untie, unlock, undo, etc. 0
- intransitive verb unfasten to become unfastened 0