Found 2 items, similar to crackpot.
English → English (WordNet) Definition: crackpot crackpot n : a whimsically eccentric person [syn: crank, nut, nut case , nutcase, fruitcake, screwball]
English → English (gcide) Definition: crackpot crackpot \crackpot\ n. a whimsically eccentric person. Syn: crank, nut, nutcase, screwball. [WordNet 1.5]