aficionado
/ˌæfɪʒˈoʊnɪdəʊ/Definitions
1. noun
A person who has a deep enthusiasm or expertise for a particular activity, interest, or subject.
“The film enthusiast was considered an aficionado of classic Hollywood movies.”
2. noun
A connoisseur or expert in a particular field.
“He was a renowned aficionado of fine wine and gourmet cuisine.”