tighten sth up
— phrasal verb with tighten uk/ˈtaɪ.tən/us/ˈtaɪ.tən/verb [ I or T ]
to make something become tighter, firmer, or less easy to move:
Now tighten up the screws.
Thesaurus: synonyms and related words
Tight and tightening
- close-fitting
- fast
- serried
- skinny
- snug
- stiffen
- strain
- taut
- tauten
- tense
- tension
- tight
- tighten
- tightly
- up
- vice-like