a. Not common; unusual; infrequent; rare; hence, remarkable; strange; as, an uncommon season; an uncommon degree of cold or heat; uncommon courage. [ 1913 Webster ]
(adj) not common or ordinarily encountered; unusually great in amount or remarkable in character or kind, Ant. common, Example:uncommon birds; frost and floods are uncommon during these months; doing an uncommon amount of business; an uncommon liking for money; he owed his greatest debt to his mother's uncommon character and ability
[かわる, kawaru] (v5r, vi) (1) to change; to be transformed; to be altered; to vary; (2) to move to; (3) (usu. as 変わった, 変わっている) (See 変わった, 変わっている) to be different; to be uncommon; to be unusual; (P)#4858