connoisseur (n.)

1714, from French connoisseur (Modern French connaiseur), from Old French conoisseor "an expert, a judge, one well-versed," from conoistre "to know," from Latin cognoscere "to get to know, recognize, become well-acquainted with," from com "with, together" (see com-) + gnoscere "recognize," from PIE root *gno- "to know."

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