# WCAG 2.2 – 3.1.3 Unusual Words

- Level: AAA
- Principle: 3 Understandable
- Guideline: 3.1 Readable
- Introduced in: WCAG 2.0

## What the rule requires

Jargon, idioms and unusual words are explained.

## How to get it right

Explain technical terms right in the text or link to a glossary: “screen reader (a program that reads the screen aloud)”.

## Who benefits

- People with cognitive disabilities
- People with dyslexia

## Sources

- [This rule on wcag.dehl.net](https://wcag.dehl.net/en/wcag/3-1-3/)
- [Official W3C explanation](https://www.w3.org/WAI/WCAG22/Understanding/unusual-words)
- [Techniques (WCAG Quick Reference)](https://www.w3.org/WAI/WCAG22/quickref/#unusual-words)

_Plain-language explanation. Only the original W3C text is normative._