# derangement

*See also:*

**dérangement**

## Contents

## EnglishEdit

### EtymologyEdit

Borrowed from French *dérangement*.

### NounEdit

**derangement** (*countable and uncountable*, *plural* **derangements**)

- The property of being deranged.
- An act or instance of deranging.
- (mathematics, combinatorics) A permutation of a set such that no element is in its previous position.