oddball eccentric crossword clue

 The crossword clue "oddball eccentric" can be kook. A kook is a person who is considered to be strange or eccentric. They may have unusual beliefs or behaviors that are not considered to be mainstream.

Here are some other possible answers for the crossword clue "oddball eccentric":

Kook

Eccentric

Misfit

Nutter

Wacko

I hope this helps!