A whimsically eccentric person
English: crackpot, crank, nut, nut case, fruitcake, screwball
screwballEnglish
screwball, crackpot, crank, crazy, fruitcake
Noun
A pitch with reverse spin that curves toward the side of the plate from which it was thrown
English: screwball
Adjective
Foolish, totally unsound
English: crazy, half-baked, screwball, softheaded