Mentirosa translates to "liar" and is a direct, impactful word that immediately grabs attention. It's not a common, gentle term, but rather a strong accusation.
In this song, Buika repeatedly uses "Mentirosa" to confront someone who has betrayed her trust. It's central to the song's theme of heartbreak and disillusionment, making it a powerful and memorable word that encapsulates the raw emotion of the lyrics.
"Mentirosa" is Buika's furious goodbye to someone who never stopped lying to her. She opens by confessing how far she went for them, admitting she loved this person "más que a mí misma" [more than myself] and cared for them "como a un niño" [like a child] for no real reason at all. The chorus turns that devotion into an accusation: however far they drift apart, she'll still carry them "en el alma" [in my soul] — even as she names exactly what they are: "Eres una mentirosa" [You are a liar].
By the bridge the tenderness is gone. She's done crying, and she says so mid-song: "Mientes mucho más de lo que hablas" [You lie much more than you talk]. The chorus that follows drops any softness entirely, pairing the heartbreak with open contempt — "Mentirosa, cobarde" [Liar, coward] — for someone who leaves "sin dar la cara" [without showing their face].