madcap Meaning, Definition & Usage

  1. noun a reckless impetuous irresponsible person
    harum-scarum; swashbuckler; lunatic; daredevil; hothead.
  2. adjective satellite characterized by undue haste and lack of thought or deliberation; (`brainish' is archaic)
    impetuous; brainish; tearaway; impulsive; hotheaded.
    • a hotheaded decision
    • liable to such impulsive acts as hugging strangers
    • an impetuous display of spending and gambling
    • madcap escapades

WordNet

Mad"cap` adjective
Definitions
  1. Inclined to wild sports; delighting in rash, absurd, or dangerous amusements.
    "The merry madcap lord." Shak.
  2. Wild; reckless.
    "Madcap follies" Beau. & Fl.
Mad"cap` noun
Definitions
  1. A person of wild behavior; an excitable, rash, violent person. Shak.

Webster 1913