Insistir means "to insist" or "to persist." It's a common verb, but its usage in this song is particularly poignant and relatable.
The lyrics express a feeling of weariness from a tumultuous relationship, with the singer stating, "sem insistir mais" (without insisting anymore). This highlights a moment of giving up on trying to make things work, making the word resonate with anyone who has experienced a similar emotional struggle.
This song captures the painful moment of ending a relationship, even when there's still a lot of love and connection. The singer is tired of the constant cycle of fighting and making up, describing it as a "vai e vem" (back and forth) that has left their heart broken with "não tem mais cura" (no more cure).
Despite admitting, "Eu nunca encontrei outra mulher igual você" (I never found another woman like you), the singer knows they have to move on. They've realized that even though their partner is unique, they are not what the singer ultimately needs. It's a sad but firm decision to stop insisting and to finally "seguir o caminho daqui pra frente" (follow the path from now on) in search of someone who can complete their days.