Rare1. (a.) Early.
2. (superl.) Nearly raw; partially cooked; not thoroughly cooked; underdone; as, rare beef or mutton.
3. (superl.) Not frequent; seldom met with or occurring; unusual; as, a rare event.
4. (superl.) of an uncommon nature; unusually excellent; valuable to a degree seldom found.
5. (superl.) Thinly scattered; dispersed.
6. (superl.) Characterized by wide separation of parts; of loose texture; not thick or dense; thin; as, a rare atmosphere at high elevations.
Thesaurus Entries
a cut above, above, admirable, adulterated, ahead, airy, almost unheard-of, another, ascendant, at a premium, attenuate, attenuated, atypical, beguiling, better, bewildering, boyish, breakaway, capping, celebrated, cheeseparing, chinchy, chintzy, choice, chosen, collectable, conspicuous, crude, cut, dainty, delicate, diaphanous, dilute, diluted, distinguished, eclipsing, elegant, else, eminent, enigmatic, esteemed, estimable, ethereal, exceeding, excellent, excelling, exceptional, exiguous, exquisite, extraordinary, fabulous, fallen, fantastic, fascinating, few, fine, fine-drawn, finer, finespun, first-class, first-rate, flimsy, frail, gaseous, gauzy, girlish, good, gossamer, gracile, greater, higher, in ascendancy, in short supply, in the ascendant, incomparable, incomprehensible, inconceivable, incredible, infrequent, insubstantial, lacy, light, limited, major, marked, marvelous, matchless, meager, memorable, miraculous, miserly, misty, niggardly, noble, not done, not that sort, not the same, not the type, notable, noteworthy, occasional, of a sort, of another sort, of choice, of mark, of sorts, offbeat, one up on, other, other than, otherwise, out of print, out of season, out of stock, outlandish, outstanding, over, papery, passing strange, peculiar, peerless, phenomenal, piddling, poor, prestigious, prodigious, prominent, puzzling, rarefied, raw, recherche, red, remarkable, rememberable, reputable, rivaling, saignant, salient, scant, scanty, scarce, scattered, scrimping, scrimpy, seldom, seldom met with, seldom seen, select, sensational, signal, singular, skimping, skimpy, slender, slenderish, slight, slight-made, slim, slimmish, slinky, slow, small, sodden, sparse, special, sporadic, spotty, sprinkled, stingy, strange, striking, stupendous, subtile, subtle, sui generis, super, superior, superlative, surpassing, svelte, sylphlike, telling, tenuous, thin, thin-bodied, thin-set, thin-spun, thinned, thinned-out, thinnish, threadlike, tight, topping, transcendent, transcendental, transcending, unbaked, unboiled, uncommon, uncompact, uncompressed, uncooked, uncustomary, undercooked, underdone, undreamed-of, unexpected, unfamiliar, unforgettable, unfrequent, unheard-of, unimaginable, unique, unordinary, unparalleled, unprecedented, unsubstantial, unthinkable, unthought-of, unusual, unwonted, upper, vague, vaporous, wasp-waisted, watered, watered-down, watery, weak, willowy, windy, wiredrawn, wispy, wonderful, wondrous