エチケット
エチケット · echiketto · JLPT N2 · noun
etiquette
🎫🎩 e-CHIKETTO hides ticket: French étiquette was a label of court rules
Japanese borrowed エチケット from French étiquette, which meant a ticket or label. At the French court, the rules of behaviour were written on these tickets, so the word for the label came to mean good manners. Say it as e + chiketto, and chiketto is the Japanese way of saying ticket.