Idiom: Personality Conflict
Tom: Have you seen Kevin and Peter these days? They are constantly arguing!
Kelsey: I know! They used to get along so well. Do you think they are stressed out with the new project?
Tom: I don’t know... I think it is more like a personality conflict. Kevin always submits the reports by the deadline, whereas Peter is always late.
Kelsey: Oh, I see.
Meaning: The expression “personality conflict” means a disagreement or opposing ideas that lead to verbal or physical fighting in a variety of situations. A conflict is created when what one person wants differs from what another wants. In the example above, one of the coworkers didn’t feel like submitting the report by the deadline, and that created a conflict both with the other coworker and with the boss.