Gnarly is a 2025 single by KATSEYE, the global girl group formed through HYBE and Geffen Records' Dream Academy project. Released ahead of the group's second EP, Beautiful Chaos, the track quickly spread beyond K-pop fans through short dance clips and reaction videos on TikTok. Its clipped, chant-like hook and driving beat made it easy to reuse in two-second edits, while the word itself became a shorthand for something bold or over the top. The sound remains popular with fans and creators who want an instant burst of confidence.