How do you say arrogant frenchman in french?
The play itself can not be arrogant, since that word refers to a character trait, and a play is an inanimate object. But the person who wrote it (the playwright) can be considered arrogant. Or we could say the dialogue in the play can shows arrogance; or, more accurately, we can say that some of the characters act in an arrogant way.
This sentence doesn't make much sense grammatically, but if you mean that French is spoken there, you would want to say something like this: "Le francais est parlé en Louisiane" which means "French is spoken in Louisiana." If you try to translate your phrase literally, "Le francais est en Louisiane", you would be saying that a Frenchman is in Louisiana!
Singular: Masculine = Le Français (The Frenchman) Feminine = La Française (The Frenchwoman) Plural: Masculin = Les Français (The Frenchmen) Feminine = Les Françaises (The Frenchwomen) Otherwise, "French" is an Adjective and it describes a Noun. And if you want to say the word, "noun" in French, it's le "nom".