The story
- Latincognōscens, cognōscentem
- Frenchconnaiss(ant)
- Frenchconnoisseur
- English todayconnoisseur
Around 1705–1715, from French connoisseur, from the verb connoître (obsolete pre-1835 spelling of connaître (“to know”)).
Etymology from Wiktionary, CC BY-SA 4.0.