unfasten verb - Definition, pictures, pronunciation and usage notes | Oxford Advanced American Dictionary at OxfordLearnersDictionaries.com

Definition of unfasten verb from the Oxford Advanced American Dictionary

unfasten

verb

NAmE//ʌnˈfæsn//

unfasten somethingVerb Forms present simple I / you / we / they unfasten

he / she / it unfastens

past simple unfastened

-ing form unfastening

to undo something that is fastened to unfasten a belt/button, etc. opposite fasten

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