Antonyms of adv voluntarily

1 sense of voluntarily

Sense 1
voluntarily -- (out of your own free will; "he voluntarily submitted to the fingerprinting")
       Antonym of involuntarily (Sense 1)
      => involuntarily -- (against your will; "he was involuntarily held against his will")

Synonyms of adv voluntarily

1 sense of voluntarily

Sense 1
voluntarily -- (out of your own free will; "he voluntarily submitted to the fingerprinting")