connoisseurly

Adjective

 * Of, related to, or having the deep expertise in some area; characteristic of a connoisseur.
 * His connoisseurly refinement helped him to gain our respect.
 * His connoisseurly refinement helped him to gain our respect.

Adverb

 * 1) in connoisseurly manner
 * He talked about the Italian wines connoisseurly.
 * He talked about the Italian wines connoisseurly.