adjective. initiating or popularizing a trend.
1. Verb, gerund or present participle Burlap is on fire with trendsetting decorators for everything from window coverings to wedding favors. 2. Noun, singular or mass Bold leopard print wallpaper (a nod to the honorable lion of the Zodiac), a zebra striped chair, and regal purple accents all add up to a stately refuge that matches Leo's trendsetting ways.