RARE Copy link • RAREOf unfrequent occurrence, rarus: (unusual, uncommon), insolitus; insolens: (strange), mirus; novus. Excellent, select, etc., conquisitus: conquisitus et electus: exquisitus: eximius: egregius: praestans: rarest, conquisitissimus (☞ rarus, in this sense, is poetical): rare wines, veterrima vina.