Answer: wacko

AnswerCrossword Clue
WACKONut job
wackoodd or irrational; crazy
wackoa mad or eccentric person
wackoeccentric, strange, or odd person
WACKONutsy
WACKOOff-the-wall
WACKOTotally nuts
WACKOBonkers
WACKOLoony
WACKOScrewy
WACKOOdd fellow
WACKOMore than odd
WACKOFar-out
WACKOOff the wall
WACKOCrazy
WACKOOddball
WACKOFlake
WACKOScrewball
WACKONutcase
WACKOBananas
WACKOKook
WACKONot firing on all cylinders
WACKOLoony one
WACKOEccentric
WACKONuts
WACKODeranged