derangement.

1. A serious disturbance of ordinary mental functioning or judgment.

2. A disruption of the normal arrangement or functioning of a structure.

Use it for

Words that belong together

• mental derangement

On the page

The old report called it mental derangement.

The narrator feared derangement after the visions.

Usage notes

Primary category: horror. Forms: Usually uncountable. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings.