Olvido translates to "oblivion" or "forgetfulness". It is a powerful and poetic word that suggests something more profound than simply forgetting.
In the song, Karol G sings that what she had with her ex "se perdió en el olvido" (was lost in oblivion). This phrase creates a dramatic image of the past not just being forgotten, but completely disappearing into nothingness, marking a definitive and final end to the relationship.
Have you ever had an ex who just wouldn't get the hint? Colombian superstar Karol G has, and she wrote this fantastic Reggaeton track about it. "Casi Nada" is the perfect song for when you're completely over someone and they're still telling people you're obsessed with them. Karol G shuts that down immediately, asking her ex, "¿Por qué insistes en mentir? / Si tú eres quien me necesita" (Why do you insist on lying? / If you're the one who needs me). She makes it clear she's moved on to bigger and better things.
The whole feeling of the song is about taking your power back. She says that since she left, her life has been "Felicidad en vez de amargura" (Happiness instead of bitterness). The message is simple and strong: what they had is gone, lost to the past. As she repeats in the chorus, "No queda nada, no queda casi nada" (There's nothing left, there's almost nothing left). It's a final, confident goodbye to a relationship that wasn't working.