Is stress masculine or feminine in french?

Stress in French is masculine. It's a noun, and in French, nouns that end in "-s" are usually masculine.

Here's how you'd say it:

* Le stress (the stress)

However, when referring to a specific type of stress, it can be either masculine or feminine depending on the context:

* Le stress psychologique (psychological stress)

* La tension nerveuse (nervous tension)

Let me know if you have any other questions!