INVOLUNTARY /ɪnˈvɒl.ən.tɹi/ Scrabble 17 Words With Friends 21 Definition adjective not subject to the control of the will. — synonyms: nonvoluntary, unvoluntary adjective controlled by the autonomic nervous system. Examples “He found himself the involuntary witness in the trial.” See all 358 words you can make from INVOLUNTARY → 11-letter words Words starting with I Words ending with Y ← Unscramble different letters