* Indigenous languages: They learned the languages of the various First Nations groups they interacted with, such as Algonquin, Ojibwe, Huron, and Cree, to facilitate trade and establish relationships.
* English: As they ventured further into British territories, some coureurs de bois learned English for trade and communication with English settlers and traders.
* Other European languages: Some coureurs de bois may have spoken other European languages, such as Spanish or Dutch, depending on their origin and travels.
It's important to note that French remained their primary language, and they played a crucial role in spreading the French language and culture throughout North America.