What is the French word for English his?

The French word for "his" depends on the context and gender of the noun it refers to:

* For masculine nouns: son

* For feminine nouns: sa

Examples:

* Son livre (His book)

* Sa voiture (His car)

It's important to note that "his" can also be translated with le sien (masculine) or la sienne (feminine) when it emphasizes possession.

Example:

* C'est le sien (It's his)