loosen up
English
editEtymology
editCompare Old Norse leysa upp (“loosen up”).
Verb
editloosen up (third-person singular simple present loosens up, present participle loosening up, simple past and past participle loosened up)
- (intransitive) To become loose; to loosen; to relax (a muscle, etc.).
- (colloquial) To relax; to act less seriously.