"Gnarly" received polarizing responses, having been described as a "sharp turn" from Katseye's previous releases. In an interview with
The Fader, Lara described "Gnarly" as unstructured, and acknowledged that it was a change of sound after "Touch". Tetris Kelly reviewed the song for
Billboard Music You Should Know, describing it as "if you get it, you get it".
NME Rhian Daly contributed "Gnarly" to the magazine's
Songs of the Summer list.
Pitchfork Joshua Minsoo Kim described the song as "the most interesting of their career", comparing it to the work of
Sophie and writing that it "provides a glimpse into what Katseye could do to live up to their promise as a global girl group." "Gnarly" appeared at number five on NME's list of 'The 50 Best Songs of 2025' list as well as on
The New York Times 'Best Songs of 2025' list at number two.
Accolades ==Live performances==