madcap

adj. crazy, reckless, impulsive

n. crazy and impulsive person, wild and reckless person

Madcap is an adjective. It is most often used to describe human personality traits; impulsiveness, hastiness, recklessness and capriciousness are all applicable. An individual described as a Madcap may appear quite Indifferent in regard to dangerous situations; a person with a devil may care attitude.
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Noun
1. a reckless impetuous irresponsible person
(synonym) daredevil, hothead, swashbuckler, lunatic, harum-scarum
(hypernym) adventurer, venturer
(hyponym) tearaway
Adjective
1. characterized by undue haste and lack of thought or deliberation; "a hotheaded decision"; "liable to such impulsive acts as hugging strangers"; "an impetuous display of spending and gambling"; "madcap escapades"; (`brainish' is archaic)
(synonym) hotheaded, impulsive, impetuous, tearaway(a), brainish
(similar) incautious
(classification) archaism, archaicism

(n.)
A person of wild behavior; an excitable, rash, violent person.
  

(a.)
Wild; reckless.
  

(a.)
Inclined to wild sports; delighting in rash, absurd, or dangerous amusements.
  

Math and set problems, for the Maniac II and CDC 6600. "MADCAP - A Scientific Compiler for a Displayed Formula Texbook Language", M.B. Wells, CACM 4(1):31-36 (Jan 1961). Sammet 1969, pp.271-281. Versions: Madcap 5 (1964), Madcap 6. "The Unified Data Structure Capability in Madcap 6", M.B. Wells et al, Intl J Comp Info Sci 1(3) (sep 1972).