What is the difference between 'He is a loner' and 'He is very much a loner'? Thanks.
"He is very much a loner" is simply an emphatic version of "He is a loner."
The version with "very much" sounds very strange outside of context.
Here is a context in which the version with "very much" would work:
A: Is he a loner?
B: Oh, yes! He is very much a loner.