coworker

noun

co·​work·​er ˈkō-ˌwər-kər 

variants or co-worker

plural coworkers or co-workers

: one who works with another : a fellow worker

went out for drinks with her coworkers after work

So instead of serving your family, friends and even co-workers outdated, calorie-laden foods, treat them to this new cuisine.

—Charlotte Lyons

Synonyms of coworker

• colleague

Examples of coworker in a Sentence

my coworkers and I often send facetious e-mails to one another

Recent Examples on the Web

After Sasha was born, her parents mailed birth announcements to close family and friends, including one addressed to a former coworker of her dad’s who lived in Chicago. — Ashley Vega, PEOPLE, 25 Aug. 2026

Rather than over-scheduling people to maintain up-to-date global assets, a company can transfer much of this workload to its Smartcat AI coworkers. — Lyssanoel Frater, USA Today, 24 Aug. 2026

This coworker got three clear answers and kept looking for another route while staying vague about their plans. — Kristin Stoller, Fortune, 24 Aug. 2026

The couple’s 6-year-old son had been with a sitter, said a coworker of Garcia’s. — Martin Goillandeau, CNN Money, 20 Aug. 2026

Word History

First Known Use

1591, in the meaning defined above

Rhymes for coworker

• caseworker
• farmworker
• woodworker
• worker

Kids Definition

coworker

noun

co·​work·​er

ˈkō-ˌwər-kər

: a fellow worker