FAQs About the word crackbrains

nuts

an erratic person, crackpot

nuts,bugs,lunatics,cracks,loonies,divers,Nutbars,madmen,oddities,zanies

Followers,sheep,Conformists,conformers

crackbrain => crackpot, crackajacks => Crackajacks, crack down (on) => crackdown (on), crack (up) => crack (up), crack (on) => crack a joke (on),