Antonyms of verb get_well

1 sense of get well

Sense 1
get well, get over, bounce back -- (improve in health; "He got well fast")
       Antonym of get worse (Sense 1)
      => get worse, relapse -- (deteriorate in health; "he relapsed")

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

1 sense of get well

Sense 1
get well, get over, bounce back -- (improve in health; "He got well fast")
       => better, improve, ameliorate, meliorate -- (get better; "The weather improved toward evening")