(transitive) To make worse; to impair.
- Near-synonyms: aggravate, exacerbate; degrade, deteriorate; see also Thesaurus:aggravate
- Global warming has worsened the weather.
- As for further retaliation: adding such fuel to the fire, as it were, will only worsen the already unpleasant state of affairs.
(intransitive) To become worse; to get worse.
- The weather has worsened.
(transitive, obsolete) To get the better of; to worst.