unintentional Synonyms

incidental unwitting unintended unplanned not planned unforeseen unwilling unwilled unvoluntary unthinking unmeant unlooked-for unexpected unconscious unintentionally unknowing unthought undevised uncalculated unanticipated lippening undeliberate undesigned unpremeditated accidentary serendipitous noncausal uncaused spontaneous reflexive forced fluky designed contingent coincidental chance causeless casual blind automatic aimless adventitious fortuitous haphazard reflex random purposeless mechanical involuntary intentioned