to grow or cause to grow worse
WordReference Random House Learner's Dictionary of American English © 2025
wor•sen /ˈwɜrsən/USA pronunciation
v.
WordReference Random House Unabridged Dictionary of American English © 2025- to (cause to) become worse: [no object]The economy has worsened.[~ + object]Those measures will worsen the economy.
wors•en
(wûr′sən),USA pronunciation v.t., v.i.
- to make or become worse.
- Middle English worsenen. See worse, -en1 1175–1225
- decline, deteriorate, slip, sink.
Collins Concise English Dictionary © HarperCollins Publishers::
'worsen' also found in these entries (note: many are not synonyms or translations):
aggrieve
- alter
- ameliorate
- amend
- degenerate
- degrade
- deteriorate
- exacerbate
- exasperate
- improve
- rectify
- remedy
- sour