'Harum-scarum' definitions:

Definition of 'harum-scarum'

adverb

In a wild or reckless manner; "dashing harum-scarum all over the place"; "running pell-mell up the stairs" [syn: harum-scarum, pell-mell]

adjective

Cheerfully irresponsible; "carefree with his money"; "freewheeling urban youths"; "had a harum-scarum youth" [syn: carefree, devil-may-care, freewheeling, happy-go-lucky, harum-scarum, slaphappy]

noun

A reckless impetuous irresponsible person [syn: daredevil, madcap, hothead, swashbuckler, lunatic, harum-scarum]

From: GCIDE

Harum-scarum \Har"um-scar"um\ (h[^a]r"[u^]m*sk[^a]r"[u^]m), 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]