Answer:

kook

Answer	Crossword Clue
KOOK	Eccentric
KOOK	Weirdo
KOOK	Nut

KOOK	Wacky one
KOOK	Flake
KOOK	Wacko
KOOK	Odd sort
KOOK	Oddball
KOOK	Eccentric one
KOOK	Screwball
KOOK	Eccentric sort

KOOK	Ding-a-ling
KOOK	Nut job
KOOK	Nutso
KOOK	Crazy one
KOOK	Person who is off-the-wall and out in left field
KOOK	Fruitcake
KOOK	Eccentric one, modern style.
KOOK	Oddball.

KOOK	Nutty one
KOOK	Crackpot
KOOK	Nutcase
KOOK	Nut case
KOOK	Wack job
KOOK	Palindromic nut
KOOK	Common slur on political talk radio
KOOK	An eccentric

KOOK	Eccentric individual
KOOK	Lunatic
KOOK	Eccentric, slangily
KOOK	Off-the-wall sort
KOOK	Loony