60 synonyms for rare such as beyond comparison, as scarce as hen's teeth, atypical, a1, and beyond compare. Rare is an adjective, and its antonyms are common and frequent.
As scarce as hen's teeth, few and far between, golden, infrequent, intermittent, isolated, like gold dust, limited, occasional, odd, out of the common, scarce, scattered, sparse, sporadic, thin on the ground, unaccustomed, and unwonted.
Atypical, out of the ordinary, precious, recherché, remarkable, singular, special, uncommon, unfamiliar, and unusual.
A1, beyond compare, beyond comparison, choice, consummate, excellent, exceptional, exquisite, first-class, first-rate, incomparable, inimitable, matchless, outstanding, peerless, second to none, special, stellar, superb, superior, superlative, surpassing, top-notch, unequalled, unexampled, unique, unparalleled, unrivalled, unsurpassed, very fine, and without equal.