Antonyms of verb deteriorate

1 of 2 senses of deteriorate

Sense 2
devolve, deteriorate, drop, degenerate -- (grow worse; "Her condition deteriorated"; "Conditions in the slums degenerated"; "The discussion devolved into a shouting match")
       Antonym of recuperate (Sense 4)
      => recuperate, recover, convalesce -- (get over an illness or shock; "The patient is recuperating")

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

2 senses of deteriorate

Sense 1
deteriorate -- (become worse or disintegrate; "His mind deteriorated")
       => decay, crumble, dilapidate -- (fall into decay or ruin; "The unoccupied house started to decay")

Sense 2
devolve, deteriorate, drop, degenerate -- (grow worse; "Her condition deteriorated"; "Conditions in the slums degenerated"; "The discussion devolved into a shouting match")
       => worsen, decline -- (grow worse; "Conditions in the slum worsened")