a. [ Cf. hare, v. t., and scare, v. t. ] Wild; giddy; flighty; rash; thoughtless. [ Colloq. ] [ 1913 Webster ]
They had a quarrel with Sir Thomas Newcome's own son, a harum-scarum lad. Thackeray. [ 1913 Webster ]
‖n. [ L. See Scar a kind of fish. ] (Zool.) A Mediterranean food fish (Sparisoma scarus) of excellent quality and highly valued by the Romans; -- called also