时兴 is a stative verb meaning 'popular' or 'in vogue', used to describe a trend or fashion that is current. It's similar to 流行 but slightly more colloquial and often used for specific styles or activities. You can use it in predicate position (e.g., 现在时兴这个 'this is in vogue now') or attributively with 的 (e.g., 时兴的款式 'the popular style').