The phrasal verb "fall out" is more commonly used in informal contexts, featuring prominently in everyday conversation and less so in formal writing or speech. It is primarily used to describe the deterioration of a relationship, as in "They fell out over a minor argument." This usage indicates a disagreement or conflict that leads to a rupture in the friendship or relationship. In other contexts, it can denote the physical action of something dropping out of its place, such as "The book fell out of my bag." Additionally, it can refer to hair or teeth becoming loose and detaching, like "Her hair began to fall out after the treatment." The versatility of "fall out" makes it applicable in diverse situations ranging from emotional and interpersonal contexts to physical occurrences.
B1
PreIntermediate
1. To have a disagreement or argument, resulting in a damaged relationship or end to friendship.
After their argument about money, they fell out and didn't speak for months.
Julie fell out with her neighbors over the loud noise coming from their house.
2. To literally fall from a place, such as falling out of a car or a tree.
The kitten fell out of the tree but wasn't hurt.
Make sure you buckle up so you don't fall out of the car.