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

unnecessary \unnec"essary\, a.
   not necessary; not required under the circumstances; unless;
   needless; as, unnecessary labor, care, or rigor. --
   unnec"essarily, adv. -- unnec"essariness, n.
   1913 webster
   1913 webster
see also:
unnec"essarily unnec"essariness 

[2] : WordNet (r) 2.0

unnecessary
     adj : not necessary syn: unneeded ant: necessary
see also:
unneeded necessary 

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

27 moby thesaurus words for "unnecessary":
   de trop, dispensable, disposable, excess, expendable, expletive,
   gratuitous, in excess, inessential, needless, nonessential,
   pleonastic, prolix, redundant, spare, supererogatory, superfluous,
   surplus, tautologic, tautologous, to spare, uncalled-for,
   unessential, unneeded, unrequired, unwanted, verbose

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