diglottism
/ˌdɪɡˈlɒtɪzəm/Definitions
1. noun
The condition of having two languages or dialects, especially as a feature of a person’s speech or thought.
“The linguist studied diglottism in various cultural contexts.”
2. noun
The use of two languages in the same speech or text, often in a way that is not consistent or predictable.
“The politician’s diglottism caused confusion among her international audience.”