Antonyms of adv immaturely

1 sense of immaturely

Sense 1
immaturely, jejunely -- (in an immature manner; "his teenage son still behaves very immaturely")
       Antonym of maturely (Sense 1)
      => maturely -- (in a mature manner; "she acts very maturely for her age")

Synonyms of adv immaturely

1 sense of immaturely

Sense 1
immaturely, jejunely -- (in an immature manner; "his teenage son still behaves very immaturely")