crackers

adjective

crack·​ers ˈkra-kərz 

informal + disparaging

: marked by thought or action that lacks reason

Synonyms

• balmy
• barmy [chiefly British]
• bats
• batty
• bedlam
• bonkers
• brainsick
• bughouse [slang]
• certifiable
• crackbrained
• cracked
• crackpot
• cranky [dialect]
• crazed
• crazy
• cuckoo
• daffy
• daft
• demented
• deranged
• fruity [slang]
• gaga
• haywire
• insane
• kooky
• kookie
• loco [slang]
• loony
• looney
• loony tunes
• looney tunes
• lunatic
• mad
• maniacal
• maniac
• mental
• meshuga
• meshugge
• meshugah
• meshuggah
• moonstruck
• non compos mentis
• nuts
• nutty
• psycho
• psychotic
• scatty [chiefly British]
• screwy
• unbalanced
• unhinged
• unsound
• wacko
• whacko
• wacky
• whacky
• wud [chiefly Scottish]

Examples of crackers in a Sentence

This new computer program is driving me crackers!

I think he's gone a little crackers.

Word History

Etymology

probably from cracked + -ers (as in starkers)

First Known Use

1928, in the meaning defined above