IPA: //ˌbuːləˈvɑːrdiːər//
KK: /ˌbuːləˈvɑːrdiːər/
A man who enjoys socializing and is often seen in fashionable places, especially in cities like Paris.
He was known as a boulevardier, always dressed elegantly and attending the best parties.
Boulevardier is derived from the French word 'boulevard' (meaning a broad street) and the suffix '-ier' (meaning one who is associated with or a person of). The term originally referred to a person who frequents or is associated with boulevards, often implying a fashionable or sophisticated individual.
Think of someone who is associated with a 'broad street' ('boulevard') — that's why a boulevardier is someone who enjoys the social life found in such places.
No commonly confused words.