Arrepiento comes from the verb arrepentirse, meaning "to regret" or "to repent". It's a strong emotional word that conveys a sense of remorse or sorrow over past actions or inactions.
In "Un Día Perdido," Amaia sings "Me arrepiento bastante" (I regret quite a lot) as she reflects on time slipping away. This word captures the song's melancholic theme of lost time and missed opportunities, making it a poignant and relatable choice for learners.
Amaia builds "Un Día Perdido" around a single night that won't resolve into either evening or morning. The clock keeps moving — "Son las seis de la tarde" (It's six in the afternoon), then ten at night, then midnight — but she stays stuck between waking and sleep, inventing summer memories in her own bed rather than living anything real. Someone wants to come over; she'd rather just sleep and admits she doesn't understand what they expect from her.
The chorus turns that numbness into something closer to collapse: "Miles de piedras, las veo caer" (Thousands of stones, I see them fall) as she lets herself go, unable to explain why anyone would love her in this state. It's a song about the hours blurring together when you're too tired to feel anything clearly — time passing without the day ever really starting.