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

unmarried \unmarried\
   see married.
see also:
married 

[2] : WordNet (r) 2.0

unmarried
     adj : not married or related to the unmarried state; "unmarried
           men and women"; "unmarried life"; "sex and the single
           girl"; "single parenthood"; "are you married or
           single?" syn: single ant: married
see also:
single married 

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

29 moby thesaurus words for "unmarried":
   bachelor, bachelorlike, celibataire, celibate, free, husbandless,
   maiden, maidenly, misogamist, misogynist, monastic, monk, nun,
   old-maidish, priest, single, sole, spinster, spinsterish,
   spinsterlike, spinsterly, spouseless, unattached, uncommitted,
   unengaged, unwed, unwedded, virgin, virginal

Unmarried >> U Words
Unmarried, definition of term: Unmarried
unmarried_pag1.html

Unmarried Woman >> U Words
Unmarried Woman, definition of term: Unmarried Woman
unmarried+woman_pag1.html