# nutcase

> English word · Noun · IPA /ˈnʌtkeɪs/ · frequency rank #55,619

## Definitions
1. An eccentric or odd person.
2. Someone who is insane.

## Etymology
From nut + case. Compare headcase, mental case etc.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/nutcase