## Meanings
1. Relaxed and informal; not formal or smart.
2. Relaxed and not showing much worry or concern.
3. Happening by chance or without planning.
4. Not regular or permanent, especially of work.

## Examples
- The office has a casual dress code.
- He gave a casual shrug as if it didn't matter.
- They only had casual meetings now and then.
- She found some casual work over the summer.

## Derived Forms
- casualisation
- casualism
- casualist
- casualization
- casualize
- casually
- casualness
- casualty
- casualwear
- decasualize
- hypercasual
- noncasual

## Related Forms
- case
- casualty

## Roots and Affixes
- Root: *ḱh₂d-
- Root: casuel
- Root: cāsuālis

## Etymology
From Middle French casuel, from Late Latin cāsuālis (“happening by chance”), from Latin cāsus (“event”) (English case), from cadere (“to fall”) (whence English cadence).

## AI Etymology
casual is an adjective. It is from Middle French casuel, from Late Latin cāsuālis (“happening by chance”), from Latin cāsus (“event”) (English case), from cadere (“to fall”) (whence English cadence). Historical forms in the chain include *ḱh₂d- (Proto-Indo-European), casuel (Middle French), and cāsuālis (Late Latin). Current senses include relaxed and informal; not formal or smart, relaxed and not showing much worry or concern, and happening by chance or without planning. Derived forms include casualisation, casualism, casualist, casualization, and casualize. Related words include case and casualty.

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