How do you say underwear in french?

There are a few ways to say "underwear" in French, depending on the specific type you're referring to:

General underwear:

* Sous-vêtements (most common and general)

* Vêtements de dessous (less common but also general)

For specific types:

* Culottes (for women's underwear)

* Boxers (for men's boxer shorts)

* Slips (for women's slips or camisoles)

* Brassière (for women's bra)

* String (for women's thong)

It's always best to use the specific term if you know it, but sous-vêtements is the safest bet for general use.