Poshest isn't a French word, or used in French.
Le plus chic is a French equivalent of the English word "poshest." The masculine singular phrase translates literally as "the most chic (decent, elegant, kind, nice, posh)" according to English contexts. The pronunciation will be "luh plyoo sheek" in French.
My name translated from English to french is Allen
Vendredi in French is "Friday" in English.
"Out" in English is dehors in French.
"Where?" in English is Où? in French.
Quoi? in French is "What?" in English.
"Can I ...?" in English is Puis-je ...? in French.
"(I) am" in English is (Je) suis in French.
Où? in French is "Where?" in English.
Faire in French is "to do" in English.
Il in French is "he" in English.
Comment? in French is "How?" in English.