belt up
English
Verb
belt up (third-person singular simple present belts up, present participle belting up, simple past and past participle belted up)
- (British, intransitive) To fasten one's seat belt.
- (British, intransitive, colloquial, derogatory, usually in imperative) To stop talking or chattering; to shut up.
- (slang, transitive) To beat up (someone).
Synonyms
- (fasten one's seat belt): buckle up
Antonyms
- (antonym(s) of “shut up”): belt out