[1] : The Collaborative International Dictionary of English v.0.48

unintentional \unintentional\
   see intentional.
see also:
intentional 

[2] : WordNet (r) 2.0

unintentional
     adj 1: not done or made or performed with purpose or intent syn: undesigned
            ant: designed
     2: without deliberate intent; "my heart with unwilled love grew
        warm"- george macdonald syn: unwilled
     3: not intentional; "an unintended slight"; "an unintentional
        pun"; "the offense was unintentional"; "an unwitting
        mistake may be overlooked" syn: unplanned, unwitting
see also:
undesigned designed unwilled unplanned unwitting 

[3] : Moby Thesaurus II by Grady Ward, 1.0

53 moby thesaurus words for "unintentional":
   automatic, blind, casual, causeless, chance, compulsive,
   conditioned, forced, gut, haphazard, ill-advised, ill-considered,
   ill-devised, impulsive, inadvertent, indeliberate, instinctive,
   involuntary, mechanical, purposeless, random, reflex, reflexive,
   snap, spontaneous, unadvised, unanticipated, uncalculated,
   unconscious, unconsidered, undeliberate, undeliberated, undesigned,
   undevised, unexpected, unforeseen, unguarded, unguided, unintended,
   unlooked-for, unmeant, unmeditated, unplanned, unpremeditated,
   unprompted, unpurposed, unstudied, unthinking, unthought,
   unthought-of, unwilled, unwilling, unwitting

Unintentional >> U Words
Unintentional, definition of term: Unintentional
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