LOONY

Considerably less than all there

• ___ -tunes: nuts

• Bananas

• Bananas or nuts

• Bats

• Bonkers

• Certifiable, so to speak

• Cockamamie

• Crackers

• Crazy

• Crazy in the head

• Cuckoo

• Daft

• Foolish

• Harebrained

• Inane

• Kind of bin

• Kind of tune

• Kook

• Mad

• Mad as a hatter

• Meshuga

• Non compos mentis

• Nonsensical

• Not all there

• Not sane

• Off one's rocker

• Off-the-wall

• One brick shy of a load

• Out to lunch

• Preposterous

• Round the bend

• Senselessly foolish

• Touched

• Tunes preceder

• Unhinged

• Very foolish

• Wacked out

• Wacko

• What some thought Columbus was

• Someone deranged and possibly dangerous