madcap

mad-cap · adjective

imported

Definitions

adjective

  1. 1.

    Amusingly eccentric or recklessly impulsive; characterized by wild behavior or ideas.

  2. 2.

    (As noun) A person who behaves in a wildly impulsive manner.

Related words

Antonyms: cautious, prudent, sensible
See also: reckless, wild, zany
Synonyms: impulsive, reckless, wild, zany

Etymology

From English mad + cap (head), originally meaning someone whose head is filled with madness; first used in the 16th century.