nonpareil

[1]	ideal , paragon , model , paragon , saint , standard , exemplar , apotheosis , nonesuch , ideal , (Literary) nonsuch/nonesuch , nonsuch , (Colloq) oner , one in a million , (Brit) one-off

adj.

[1]	matchless , one , one and only , peerless , unmatched , unmatchable , unrivaled , unrivalled