wildly or heedlessly impulsive; reckless; rash: a madcap scheme.


a madcap person.

Origin of madcap

First recorded in 1580–90; mad + cap1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for madcap

Contemporary Examples of madcap

Historical Examples of madcap

British Dictionary definitions for madcap



impulsive, reckless, or lively


an impulsive, reckless, or lively person

Word Origin for madcap

C16: from mad + cap (in the figurative sense: head)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for madcap

1580s, noun and adjective, from mad (adj.) + cap, used here figuratively for "head." Related: Madcappery.

Online Etymology Dictionary, © 2010 Douglas Harper