What is a synonym for rare?

Answer 1

attenuate, attenuated, deficient, extraordinary, few, few and far between, flimsy, inconceivable, isolated, light, limited, occasional, out of the ordinary, rarefied, recherché, scanty, scarce, scattered, seldom, semioccasional, short, singular, sparse, sporadic, strange, subtile, subtle, tenuous, thin, uncommon, unfrequent, unheard of, unimaginable, unique, unlikely, unthinkable, unusual, unwonted
obscure, limited, allusive