Accommodation Definition

Accommodation is when someone changes the way they speak when talking  to someone.   If they make their speech more similar to that of the person they are talking to, it is known as convergence- this could involve simplfying their language, or adopting an accent closer to the other person's.   If they make their speech less similar, it is divergence- they could, for example, exaggerate a regional accent or use more slang to make themselves harder to understand.