People Do This When They Take Opposing Sides

This page is the CodyCross answer for the clue below from House of Horrors, Group 1114, Puzzle 1 (Vengeful Spirits).

Question is: People Do This When They Take Opposing Sides

and the answer is: DISAGREE

Word Meaning:

DISAGREE — (intransitive) To fail to agree; to have a different opinion or belief.

Definitions from Wiktionary.