rare

adj.

[1]	uncommon , unfamiliar , unusual , exceptional , out of the ordinary , extraordinary , atypical , scarce , unparalleled , choice , phenomenal , infrequent , few and far between , sparse , scanty , limited , seldom encountered/met with/seen , unique , singular , one of a kind , (Mainly Brit) thin on the ground
[2]	fine , good , admirable , excellent , choice , select , special , first-rate , first-class , exquisite , superior , superlative , peerless , unequalled , matchless , incomparable , in a class by itself/herself/himself/themselves , sui generis , outstanding , collectible/collectable
[3]	rarefied , rarified
[4]	uncommon