co-worker
Britishnoun
Explanation
A co-worker is someone you work with. Your ice cream shop co-worker might scoop the ice cream while you're on milkshake duty. When you work with someone, that person is your co-worker. The word implies that you work side-by-side — you wouldn't usually refer to your boss as your co-worker. If you work in an office, your co-workers probably have cubicles and computers that are similar to yours, and if you work on a farm your co-workers are right there beside you weeding the beets or watering the tomatoes. The prefix co in co-worker means "together" or "mutually."
Vocabulary lists containing co-worker
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Keep detailed notes of times you’ve stayed late, completed to-do’s that weren’t on your list or helped a co-worker finish a project.
From MarketWatch ● Aug. 19, 2026
Witness the two CEO roles Brian Krzanich has had at smaller companies since resigning as Intel CEO in 2018 after the company said he’d had a previous relationship with a co-worker.
From The Wall Street Journal ● Aug. 18, 2026
“It’s very cinematic,” agrees friend and co-worker Kristin Reeder, who is often a guest at his soirees, “like something from ‘Eyes Wide Shut.’
From Los Angeles Times ● Jun. 26, 2026
A former co-worker saw one of his posts and told a manager at her new company that Myhan would be a fit for a coming opening.
From The Wall Street Journal ● Jun. 18, 2026
The welfare worker laughed and looked over at a co-worker.
From "The Best of Enemies" by Osha Gray Davidson
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
