Har″um–scar″um (hâr″ŭm‐skâr″ŭm), a. [Cf. hare,v. t., and scare, v. t.] Wild; giddy; flighty; rash; thoughtless.
They had a quarrel with Sir Thomas Newcome's own son, a harum-scarum lad. Thackeray.
Webster's Dictionary 1913
Har″um–scar″um (hâr″ŭm‐skâr″ŭm), a. [Cf. hare,v. t., and scare, v. t.] Wild; giddy; flighty; rash; thoughtless.
They had a quarrel with Sir Thomas Newcome's own son, a harum-scarum lad. Thackeray.