ALL meanings of tighten up
tight·en up
T t - transitivephrasal verb tighten up fasten more securely 1
- transitivephrasal verb tighten up make stricter, more restricting 1
- intransitivephrasal verbs tighten up become more taut or tense 1
- phrasal verb tighten up If a group, team, or organization tightens up, they make an effort to control what they are doing more closely, in order to become more efficient and successful. 0
- verb tighten up To make sufficiently tight; to fix or make (something) correct. 0