connoisseur

US /ˌkɑː.nəˈsɝː/
UK /ˌkɑː.nəˈsɝː/
"connoisseur" picture
1.

an expert judge in matters of taste

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He is a true connoisseur of fine wines.
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The art collector was a renowned connoisseur.
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expertspecialistaficionadoauthoritymaven