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.
And if you were my friend, what I would say to you is this — are you truly infatuated with your co-worker, or do you just see them 40 hours a week?
From Los Angeles Times • Apr. 10, 2026
Fox News host — and military veteran — Joey Jones addressed the president and his former co-worker Hegseth directly over the weekend.
From Salon • Apr. 1, 2026
“My co-writer Tara told her co-worker about the Oscar nomination, and his reaction was, ‘Wow, this will be in your obituary.’
From MarketWatch • Mar. 13, 2026
David Campbell told the court "he didn't like me and I didn't like him" when asked about his relationship with former Edradynate Estate co-worker Brian Low.
From BBC • Feb. 17, 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.
