Synonyms and related words :
active, active voice, antiphonal, automatic, blind, casual, compulsive, conditioned, forced, gut, ill-advised, ill-considered, ill-devised, impulsive, inadvertent, indeliberate, instinctive, involuntary, mechanical, medio-passive, middle, middle voice, passive, passive voice, reacting, reactionary, reactive, reflex, refluent, respondent, responding, responsive, retroactionary, retroactive, revulsive, snap, spontaneous, unadvised, uncalculated, unconscious, unconsidered, undeliberate, undeliberated, undesigned, unintended, unintentional, unmeditated, unpremeditated, unstudied, unthinking, unwilled, unwilling, unwitting, voice