noun
the quality or state of standing alone and without a peer
the time she rode in an old-time sleigh-- never would she forget the uniqueness of that experience
Synonyms: oneness, singleness, unicity, uniquity
Related Word: curiousness, oddity, peculiarity, quaintness, singularity, strangeness; import, mark, moment, note, significance; memorability, notability, remarkableness, unusualness
Contrasted words: commonness, commonplaceness, ordinariness, routineness; monotony, sameness, tediousness