[1] : WordNet (r) 2.0

unplanned
     adj 1: without apparent forethought or prompting or planning; "an
            unplanned economy"; "accepts an unplanned order"; "an
            unplanned pregnancy"; "unplanned remarks" ant: planned
     2: not intentional; "an unintended slight"; "an unintentional
        pun"; "the offense was unintentional"; "an unwitting
        mistake may be overlooked" syn: unintentional, unwitting
see also:
planned unintentional unwitting 

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

57 moby thesaurus words for "unplanned":
   ad-lib, aimless, caught napping, caught off balance, caught short,
   designless, desultory, extemporaneous, extemporized, haphazard,
   hasty, hit-or-miss, impromptu, improvised, inadvertent,
   indiscriminate, involuntary, makeshift, precipitate, purposeless,
   rough-and-ready, snap, surprised, taken aback, taken by surprise,
   taken unawares, tripped up, unarranged, unbegun, unconcocted,
   unconscious, unconsidered, uncontrived, undeliberated, undesigned,
   undevised, unguarded, unguided, unhatched, unintended,
   unintentional, unmade, unmanufactured, unmeant, unmeditated,
   unorganized, unpremeditated, unprepared, unprimed, unprompted,
   unpurposed, unready, unstudied, unthinking, unthought,
   unthought-of, unwitting

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