What is the feminine word for dur in french?

There isn't a direct feminine equivalent of "dur" in French. The word "dur" is already gender-neutral and applies to both masculine and feminine nouns.

For example:

* Un bois dur (a hard wood - masculine)

* Une pierre dure (a hard stone - feminine)

However, there are some synonyms that could be considered more feminine in certain contexts:

* Solide (solid)

* Résistant (resistant)

* Rigide (rigid)

* Tenace (tenacious)

The best choice depends on the specific context and the nuance you wish to convey.