devolved

verb

1. 1

   To roll (something) down; to unroll.

2. 2

   To be inherited by someone else; to pass down upon the next person in a succession, especially through failure or loss of an earlier holder.

3. 3

   To delegate (a responsibility, duty, etc.) on or upon someone.

4. 4

   To fall as a duty or responsibility on or upon someone.

5. 5

   To degenerate; to break down.

   “A discussion about politics may devolve into a shouting match.”