Passageiro literally means "passenger," but in this context, it's used as an adjective meaning "temporary" or "fleeting." It's a word that carries a deeper emotional weight than its literal translation.
In the song, João Gomes sings, "Que o meu amor não será passageiro" (That my love will not be temporary). He uses this word to emphasize the eternal and enduring nature of his love, promising it will last "de janeiro a janeiro" (from January to January) until the world ends.
This song is a powerful declaration of a love that is meant to last forever. The singer describes an intense, almost overwhelming attraction, admitting they've even tried to run away from the "craziness" that pulls them towards this person. It's a love that feels destined, as if the entire universe is conspiring to bring them together.
The core message is a promise of unwavering commitment. The singer wants to prove to the world, and perhaps to their beloved, that this feeling isn't just a fleeting passion. The beautiful phrase "Te amarei de janeiro a janeiro / Até o mundo acabar" (I will love you from January to January / Until the world ends) captures this perfectly. It's a vow of a love that will endure through every season, every year, for all of time.