Small chance, also known as slim chance, is an expression used to describe a situation where the probability of something happening is low. Other synonyms for small chance include long shot, outside chance, remote possibility, and slight prospect. These phrases can be used interchangeably, depending on the context. For instance, a long shot may be used to refer to a situation where the probability of success is very low, while an outside chance refers to something that has very little chance of happening. Remote possibility, on the other hand, refers to something that could happen, although the chances are very slim. No matter the synonym used, all convey the same meaning of low probability.