덮치다 (deop-chi-da) literally means "to strike," "to raid," or "to fall upon." It's a powerful verb that describes a sudden and overwhelming force, like a tidal wave or an ambush, which makes its use in a love song very unique.
In the lyrics, JISOO sings "내 세상을 덮친 널" (you who has overwhelmed my world). She uses this dramatic word to describe how love has hit her with the unstoppable force of the song's namesake, an earthquake, completely taking over her entire world. This poetic choice perfectly captures the feeling of an all-consuming passion.
JISOO compares the feeling of falling for someone to a natural disaster in "Earthquake." It's not a gentle process; it's a sudden, powerful force that hits her completely. She sings, "It hits me like an earthquake," and her whole body trembles ("온몸이 떨려" - onmomi tteollyeo). This feeling is so intense that her heart races like an engine ("심장 마치 Vroom vroom vroom" - simjang machi Vroom vroom vroom), and it feels like time itself stops.
She's completely caught up in this person. Trying to resist is pointless, as she explains, "벗어나려 할수록 너는 짙어져" (beoseonaryeo halsurok neoneun jiteojyeo - the more I try to escape, the stronger you become). Instead of fighting it, she embraces the chaos. She's ready to fall completely, singing, "깊이 떨어져도 And I love it" (gipi tteoreojyeodo And I love it - even if I fall deep, And I love it). She doesn't just want this person; she feels she has to have them, demanding to be trapped in their eyes.