undesigned

from WordNet (r) 3.0 (2006)

undesigned
    adj 1: not done or made or performed with purpose or intent
           [ant: {designed}, {intentional}]

from The Collaborative International Dictionary of English v.0.48

Undesigned \Undesigned\
   See {designed}.

from Moby Thesaurus II by Grady Ward, 1.0

36 Moby Thesaurus words for "undesigned":
      automatic, casual, gut, ill-advised, ill-considered, ill-devised,
      inadvertent, indeliberate, involuntary, reflex, reflexive, snap,
      spontaneous, unadvised, uncalculated, unconscious, unconsidered,
      undeliberate, undeliberated, undevised, unguarded, unguided,
      unintended, unintentional, unmeant, unmeditated, unplanned,
      unpremeditated, unprompted, unpurposed, unstudied, unthinking,
      unthought, unthought-of, unwilled, unwitting