What American words with ou on them came from the French language?

You're right to be thinking about "ou" in American English! That sound often comes from French words. Here are some examples:

* "Soup": Comes from the French word "soupe."

* "Tour": From the French "tour."

* "Boutonniere": From the French "boutonnière."

* "Boulevard": From the French "boulevard."

* "Debut": From the French "début."

* "Coupon": From the French "coupon."

* "Gourmet": From the French "gourmet."

* "Group": Originally from the French "groupe."

* "Route": From the French "route."

It's important to note that while these words came from French, they've become completely naturalized into American English and may not sound entirely "French" anymore.