few cards shy of a full deck

Adjective

Meaning

a few cards shy of a full deck

(idiomatic) mentally deranged; demented; insane.
That guy might be a few cards shy of a full deck — he thinks that substitute sugar is really a government tracking system.

Source: en.wiktionary.org

Synonyms

few sandwiches short of a picnic one brick short of a full load one fry short of a Happy Meal one card shy of a full deck one card short of a full deck

Antonyms

play with a full deck

Close letter words and terms

few bob few bucks few cards short of a full deck few cents few city few coins