Answer: kook

AnswerCrossword Clue
KOOKAn eccentric
KOOKOddball.
KOOKNutty one
KOOKCrackpot
KOOKNutcase
KOOKNut case
KOOKWack job
KOOKPalindromic nut
KOOKCommon slur on political talk radio
KOOKEccentric one, modern style.
KOOKEccentric individual
KOOKLunatic
KOOKEccentric, slangily
KOOKOff-the-wall sort
KOOKLoony
kookto peep (to cheep like a chicken)
kookeccentric person
KOOKScrewball
KOOKWeirdo
KOOKNut
KOOKWacky one
KOOKFlake
KOOKWacko
KOOKOdd sort
KOOKOddball
KOOKEccentric one
KOOKEccentric
KOOKEccentric sort
KOOKDing-a-ling
KOOKNut job
KOOKNutso
KOOKCrazy one
KOOKPerson who is off-the-wall and out in left field
KOOKFruitcake