Avisar means "to warn" or "to notify." It's a common verb, but its usage in this song is particularly intriguing because it's paired with "sem" (without), creating a sense of unexpectedness.
The phrase "chega sem avisar" (arrives without warning) is repeated throughout the song, emphasizing the sudden and overwhelming nature of the emotions or the person described. This repetition makes the word memorable and central to the song's theme of being caught off guard by intense feelings.
Have you ever tried to forget someone, but they just keep showing up and pulling you back in? That's the heart of Paula Mattos's song "Chegar sem avisar." The singer describes a constant battle with themselves, looking in the mirror and promising to forget an ex who has deceived them. They try to keep their distance, but a powerful sense of longing (saudade) and sudden memories always find their way back.
The struggle becomes impossible when this person reappears, using their charms to provoke feelings the singer admits they can't control. The chorus paints a vivid picture of this cycle: "no calor da noite ela sempre chega sem avisar" (in the heat of the night, she always arrives without warning). This person's return is sudden and powerful, trapping the singer in a way that feels like there's no escape from this magnetic attraction.