Groupmate

Groupmate is a noun used in English to refer to a person who is a member of the same group as another person. The term is most commonly applied in educational settings—such as a group project in a class—or in collaborative work contexts where a defined group shares tasks. A groupmate is distinguished from a classmate (someone in the same class regardless of grouping) and from a teammate (someone on the same team, which may be broader). The word is formed by combining "group" with "mate," with "mate" conveying a sense of companionship or partnership.

In use, "groupmate" emphasizes shared membership in a particular group rather than a formal role or friendship. For example: "Her groupmates contributed equally to the presentation." The term is one of several cohort terms like "classmate," "roommate," and "teammate," and is typically used when the group is the most salient identifier of the relationship.