madcap

About 0.12 uses per million words.

Meaning

1. noun A person who acts in a capricious, impulsive, or reckless manner.
2. noun A very foolish or irresponsible person; a fool, an idiot.
3. noun An insane person; a lunatic. .mw-parser-output .defdate{font-size:smaller}
4. adjective Capricious, impulsive, or reckless; also, bizarre, crazy, zany; or foolish, idiotic.

   a madcap activity a madcap idea a madcap plan

Similar words

harum-scarum tearaway hothead brainish hotheaded impetuous lunatic daredevil impulsive incautious

Often followed by

and scheme violet adventure adventures of comedy schemes antics

Word family

madcaps