Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun crackpot

1 sense of crackpot

Sense 1
crackpot, crank, nut, nut case, fruitcake, screwball -- (a whimsically eccentric person)
       => eccentric, eccentric person, flake, oddball, geek -- (a person with an unusual or odd personality)