My coworker got promoted before I did.
If anyone wants to know who worked on the report it was my coworker and me
Dork is a noun.
My coworker and I went on a business trip.
To help my coworker get a promotion, I used the art of aggrandizement.
Hiring that coworker
The police theorize that she was murdered by a spurned lover. Did the newlywed spurn the advances of her coworker?
My coworker is such a nincompoop, he can never seem to get anything done correctly.
She wore the bright red dress hoping to catch the fancy of her handsome coworker.
No, except at the beginning of a sentence because it is n ot a proper n ou n.
I recently became acquainted with my new coworker at the company retreat.
She canceled the meeting out of spite towards her coworker who had taken credit for her idea.
you can be nice to someone by ackknowledging them or esteeming them.