IPA: /ˈtrɛndˌsɛtɪŋ/
KK: /trɛndˌsɛtɪŋ/
Describing something that leads or influences new trends, especially in fashion, art, or business.
Her trendsetting style inspired many young designers.
Trendsetting → It is formed from "trend" (from Middle English *trende*, meaning to turn or revolve) and "setting" (from Old English *settan*, meaning to place or put). The word "trendsetting" refers to the act of establishing or placing a new direction or style that others will follow.
Think of someone who is 'placing' ('setting') a new 'direction' or 'turn' ('trend') in fashion or ideas — that's what trendsetting means.
No commonly confused words.