rare -- (not widely known; especially valued for its uncommonness; "a rare word"; "rare books")
rare -- (recurring only at long intervals; "a rare appearance"; "total eclipses are rare events")
rare -- (not widely distributed; "rare herbs"; "rare patches of green in the desert")
rare, rarefied, rarified -- (having low density; "rare gasses"; "lightheaded from the rarefied mountain air")
rare, uncommon -- (marked by an uncommon quality; especially superlative or extreme of its kind; "what is so rare as a day in June"-J.R.Lowell; "a rare skill"; "an uncommon sense of humor"; "she was kind to an uncommon degree")
rare -- ((of meat) cooked a short time; still red inside; "rare roast beef")
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