nutty as a fruitcake
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
Behaving in an eccentric, foolish, or kooky manner; very nutty.
Register: colloquial
Where it’s used:
Used
American English
Examples
... and assuming that the defendant's Aunt Jane, in Wilkes-Barre, was as nutty as a fruitcake, and his grandfather, in Oskaloosa, had to wear cotton in his ears ...
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “nutty as a fruitcake” mean?
Behaving in an eccentric, foolish, or kooky manner; very nutty.
Is “nutty as a fruitcake” formal or informal?
nutty as a fruitcake is generally colloquial.