She considered him a non-friend.

I prefer to spend time with my friends rather than non-friends.

The non-understandability of his explanation left everyone confused.

She prefers non-consumptive activities like bird-watching and hiking.

He is a non-Canadian citizen.

This list is non-exhaustive, there may be other options available.

She is a non-striking member of the union.

He is a non-strike bowler.

He is a non-union worker.

This compound is a non-heterocyclic compound.