Synonyms of unintended

2 Syllables
unmeant, random, aimless, will-less, casual, re-flex, unthought, chance
3 Syllables
erratic, haphazard, unplanned, fortuitous, unwitting, unthinking, unconscious
4 Syllables
purposeless, aleatory, inadvertent, undesigned, undevised, reflexive, accidental, unexpected, unforeseen
5 Syllables
extemporaneous, unintentional, uncalculated, irreflective, involuntary
6 Syllables
unpremeditated, undeliberate