noun
colleague
KAH-leeg/ˈkɑːliːɡ/
A person one works with professionally.
The engineer shares tools with a colleague as they work on the mechanical assembly.

Etymology
Together with being sent on a commission gives the idea of someone chosen to work alongside another. The original partner in office became an associate in employment or professional work.
In context
you know maybe South Sudan because we have a colleague here at new America Justin Lynch who has been writing quite a bit
More examples
- My colleagues and I share ideas at our weekly meeting.
- She introduces me to a colleague from another department.
- He still keeps in touch with former colleagues.
Forms
colleague · colleagues
collegial adjective — Showing cooperation and respect among colleagues.
Similar words
- coworker
- Often emphasizes a shared workplace rather than professional standing.
- associate
- May describe a business connection without a shared workplace.