- 1 [transitive, intransitive] to close or join together the two parts of something; to become closed or joined together synonym do up fasten something Fasten your seat belts, please. fasten something up She fastened up her coat and hurried out. fasten (up) The dress fastens at the back. opposite unfasten
- 2[transitive, intransitive] fasten (something) to close something firmly so that it will not open; to be closed in this way Fasten the gates securely so that they do not blow open. The window wouldn't fasten. opposite unfasten
- 3[transitive] fasten something + adv./prep. to fix or place something in a particular position, so that it will not move He fastened back the shutters.
- 4 [transitive] fasten A to B fasten A and B (together) to attach or tie one thing to another thing She fastened the papers together with a paper clip.
- 5[transitive, intransitive] if you fasten your arms around someone, your teeth into something, etc., or if your arms, teeth, etc. fasten around, into, etc. someone or something, you hold the person/thing firmly with your arms, etc. fasten something + adv./prep. The dog fastened its teeth in his leg. + adv./prep. His hand fastened on her arm.
- 6[transitive, intransitive] fasten (something) (on somebody/something) if you fasten your eyes on someone or something, or your eyes fasten on someone or something, you look at them for a long time He fastened his gaze on her face. Phrasal Verbsfasten on(to) somebody/something
verbjump to other results
NAmE//ˈfæsn//Verb Forms present simple I / you / we / they fasten
he / she / it fastens
past simple fastened
-ing form fastening