madcap
mad·cap
noun
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”
Origin
The noun is derived from mad + cap (“(informal) head”). The adjective is from an attributive use of the noun.
Related words
Broader terms
Narrower terms
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.