This meaning of fellow means a man or boy. People use it to talk about someone in a friendly way. It is often informal and can mean a nice man.
He is a good fellow and helps me.
I met a fellow at the park today.
This meaning is about people who have the same job or status. They work together or share a position in a group or company.
She spoke to her fellows at work.
Fellows in the team helped each other.
This meaning means a person who is a member of a special group, like a university or scientific society. It is a formal and respectful title.
He became a fellow of the science academy.
The fellow was honored by the university.
This meaning refers to someone who receives special support (a fellowship) to study or do research. Such fellows often work at universities or research centers.
She is a research fellow in biology.
The fellow studies medicine at college.
This meaning means a person who shares something with others, like work, travel, or an experience. It shows equality or friendship in doing something together.
He is my fellow traveler on the trip.
We are fellows in this project.
Fellow can be used to talk about someone in an informal and friendly way. It is common in speaking to mean a man or person without formality.
That fellow is very kind today.
Some fellows are waiting outside.
In some English varieties like British English, fellow means a close friend or comrade. It shows a friendly and loyal relationship between men.
He's a good fellow and my best mate.
They are fellows since school days.