WordReference Random House Learner's Dictionary of American English © 2026
tight•en /ˈtaɪtən/USA pronunciation
v.
tight•en•er, n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2026- to (cause to) become tight or tighter: [no object]could feel his chest tighten with anxiety.[~ + object]to tighten rules regarding immigration.
- Idioms tighten one's belt, to respond to difficult times by reducing one's spending:The family had to tighten their belts so the children could go to college.
tight•en•er, n. [countable]
tight•en
(tīt′n),USA pronunciation v.t., v.i.
tight′en•er, n.
- to make or become tight or tighter.
- tight + -en1 1720–30
- secure, anchor, fasten.
'tightener' also found in these entries (note: many are not synonyms or translations):