| v. t. | 1. | To loose; to unfix; to unbind; to untie. |
| Verb | 1. | unfasten - cause to become undone; "unfasten your belt" |
| 2. | unfasten - become undone or untied; "The shoelaces unfastened" Antonyms: fasten - become fixed or fastened; "This dress fastens in the back" |
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