adjective
crackers
adjective
1
British informal: crazy or insane.
"You'd be crackers to turn down that job offer."
How to Use Crackers
Learner’s notesIn plain EnglishCrazy or out of one's mind, used mainly in British English.
When to use it
Informal.
UK vs US
This slang sense is mostly British; American English would more likely use "crazy" or "nuts."
Word Forms
more crackers comparative, most crackers superlative
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You'd be _____ to turn down that job offer.
Etymology
Originally British naval slang linking "firecrackers" to something going off in someone's head — "he's gone crackers" meaning he's lost his mind.