cognoscente
noun
[ ˌkɒɡnəˈʃɛnti ]
• a connoisseur; a discerning expert.
• "the art historian as professional, expert, cognoscente, and aficionado"
Origin:
late 18th century: Italian, singular of cognoscenti.
cognoscenti
noun
• people who are especially well informed about a particular subject.
• "it's worth taking a tip from the fashion cognoscenti"
Origin:
late 18th century: Italian, literally ‘people who know’, from Latin cognoscent- ‘getting to know’, from the verb cognoscere .