classmate
UK: ˈklɑːs.meɪt | US: ˈklæs.meɪt
n. a person who is in the same class as another at a school or college
The word "classmate" is a compound of "class" (from Latin classis, originally meaning "a division of the Roman people," later evolving to denote a group of students) and "mate" (from Middle Low German māt, meaning "companion" or "associate"). The term emerged in the 18th century, combining the idea of shared academic grouping ("class") with camaraderie ("mate"). This reflects the natural human tendency to label peers in shared social or educational contexts.
My classmate helped me with the math homework.
We organized a reunion for all our elementary school classmates.
She became close friends with her classmate during the semester.
The project requires collaboration with a classmate.
He recognized his former classmate at the conference.