co-worker
UK: /ˈkəʊˌwɜːkə/ | US: /ˈkoʊˌwɜːrkər/
n. a person who works with another, typically in the same organization or team
The word "co-worker" combines the prefix "co-" (from Latin "com-," meaning "together") with the root "work" (from Old English "weorc," meaning "labor") and the suffix "-er" (denoting "a person who performs an action"). This construction reflects the collaborative nature of the term, emphasizing shared labor. The prefix "co-" is widely used in English to indicate joint participation (e.g., "co-author," "coexist"), while "work" retains its core meaning of effort or task. The suffix "-er" solidifies the noun form, specifying the role of the individual.
My co-worker and I collaborated on the project.
She is a reliable co-worker who always meets deadlines.
The team celebrated their success with all co-workers.
He introduced me to his co-worker during the meeting.
A good co-worker communicates clearly and respectfully.