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.
In time, an amusing detective story emerges after Harry is implicated in the disappearance of a co-worker.
From The Wall Street Journal ● Sep. 8, 2026
Araceli Berzanes, a worker at the facility, said in an interview that she and her co-worker were assembling sandwiches in the facility’s cold storage room when the fire alarm went off.
From Los Angeles Times ● Aug. 28, 2026
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
Her boss had turned down her request, but she had managed to quietly trade shifts with a co-worker.
From "The 57 Bus" by Dashka Slater
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.
