crackpot

[ krak-pot ]
/ ˈkrækˌpɒt /
Informal.

noun

a person who is eccentric, unrealistic, or fanatical.

adjective

eccentric; impractical; fanatical: crackpot ideas.

Origin of crackpot

First recorded in 1860–65; from the phrase cracked pot

Example sentences from the Web for crackpot

British Dictionary definitions for crackpot

crackpot
/ (ˈkrækˌpɒt) informal /

noun

an eccentric person; crank

adjective

(usually prenominal) eccentric; crazy