Case

A multiword identifier is a single string that represent a series of words. Each word is formatted with a certain word case, then joined together with an optional delimiter. The format of the words, known as a pattern, along with the delimeter is what we will call a string case, or simply, a case.

$$\text{case} \coloneqq (\text{pattern}, \text{delimiter})$$

This definition aligns with colloquial uses of variable cases in programming languages. For example, snake case is the lower pattern with underscore delimiter. For a list of names given to particular pattern, delimiter pairs, see cases.