Antonyms of verb worsen

2 senses of worsen

Sense 1
worsen, decline -- (grow worse; "Conditions in the slum worsened")
       Antonym of better (Sense 3)
      => better, improve, ameliorate, meliorate -- (get better; "The weather improved toward evening")

Sense 2
worsen, aggravate, exacerbate, exasperate -- (make worse; "This drug aggravates the pain")
       Antonym of better (Sense 2)
      => better, improve, amend, ameliorate, meliorate -- (to make better; "The editor improved the manuscript with his changes")

Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb worsen

2 senses of worsen

Sense 1
worsen, decline -- (grow worse; "Conditions in the slum worsened")
       => change state, turn -- (undergo a transformation or a change of position or action; "We turned from Socialism to Capitalism"; "The people turned against the President when he stole the election")

Sense 2
worsen, aggravate, exacerbate, exasperate -- (make worse; "This drug aggravates the pain")
       => change, alter, modify -- (cause to change; make different; cause a transformation; "The advent of the automobile may have altered the growth pattern of the city"; "The discussion has changed my thinking about the issue")