adj. 25B6; adjective
rare moments of privacy : INFREQUENT, scarce, sparse, few and far between, thin on the ground, like gold dust; occasional, limited, odd, isolated, unaccustomed, unwonted; Brit. out of the common.
rare stamps : UNUSUAL, recherché, uncommon, unfamiliar, atypical, singular.
a man of rare talent : EXCEPTIONAL, outstanding, unparalleled, peerless, matchless, unique, unrivalled, inimitable, beyond compare, without equal, second to none, unsurpassed; consummate, superior, superlative, first-class; informal A1, top-notch.
common, commonplace.