fall out (2) Informal
Meaning: If you and a friend fall out, you are no longer friendly because of a disagreement or a problem you've had.
- fall out over sth/sb Sayoko and Hiroko fell out over a boy they both liked, and now they aren't speaking to one another.
- fall out with sb I fell out with my parents after I told them I was gay. They couldn't accept it.
fall out (2): friends, relatives, partners, colleagues, lovers
Note: The noun "falling-out" comes from this phrasal verb. A "falling-out" occurs when friends, colleagues or family members have a disagreement or a misunderstanding over something, and their relationship is in danger of ending. For example, "They had a falling-out over their mother's will after she died."
If two friends have fallen out over something, they are probably