The term 'prevailing FASHION' refers to the current STYLE or TREND that is popular at a given time. The crossword solutions for this term are 'MODE' (4 letters), 'VOGUE' (5 letters), and 'TREND' (5 letters). MODE is a French word meaning 'FASHION' or 'STYLE'. VOGUE is a magazine that focuses on FASHION, beauty, and lifestyle trends. TREND is a general direction in which something is developing or changing. All three words refer to the same concept of prevailing FASHION.