Mentally strange synonyms | adjectives

Synonyms for Mentally strange as an Adjective

• screw loose
• nutty as fruitcake
• round the bend
• mad as a hatter
• bats in the belfry
• of unsound mind
• out to lunch
• mad as a March hare
• potty
• 

  crazy
• unglued
• aper
• schizo
• flipped out
• freaked out
• ape
• berserk
• cuckoo
• psycho
• screwball
• barmy
• bonkers
• delirious
• dingy
• dippy
• erratic
• flaky
• flipped
• fruity
• maniacal
• mental
• moonstruck
• screwy
• unbalanced
• unhinged
• unzipped
• insane
• kooky
• mad
• nuts
• nutty
• silly
• wacky
• lunatic
• batty
• cracked
• crazed
• daft
• demented
• deranged