n-de-siècle [adjective] [not gradable] - relating to the end of a century, esp. the 1890s, and suggesting an unusual and exciting period or a period of low moral standards esp. as shown in artThe novel begins with an evocative description of fin-de-siècle Paris (= Paris in the 1890s).A fin-de-siècle feel has crept into fashion recently.
FI
Meaning of FI in English
Cambridge English vocab. Кембриджский английский словарь. 2012