Synonyms of fruitcake

1 Syllable
nut, kook, crank
2 Syllables
flake, crackpot, weirdo, nutter, screwball, maniac, dingbat, crazy, wacko
3 Syllables
scatterbrain, madwomen, cross-dresser, scatterbrains, lunatic, madwoman, nutcase, lamebrains, lamebrain
4 Syllables
sociopathic, transvestite