loony

• loony

loony

Noun

someone deranged and possibly dangerous

Synonyms:

• crazy
• loony
• looney
• nutcase
• weirdo

Adjective

informal or slang terms for mentally irregular; "it used to drive my husband balmy"

Synonyms:

• balmy
• barmy
• bats
• batty
• bonkers
• buggy
• cracked
• crackers
• daft
• dotty
• fruity
• haywire
• kooky
• kookie
• loco
• loony
• loopy
• nuts
• nutty
• round the bend
• around the bend
• wacky
• whacky