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
“You cannot, you cannot process that,” an emotional co-worker, Marilyn Gwynn, told KSBW.
From Los Angeles Times ● Jul. 23, 2026
A co-worker, Sharam Muhamadi, originally from Iran, has also been convicted of facilitating travel for exploitation.
From BBC ● Jun. 11, 2026
Notably, she adds, you may have to explicitly ask a senior co-worker to be your sponsor in the same way you requested letters of recommendation when applying to college.
From The Wall Street Journal ● May 14, 2026
The spontaneous decision to argue with that same co-worker is made unconsciously—by a different part of the brain and motivated by a different part of your personality.
From "Blink" by Malcolm Gladwell
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.
