Amargado translates to "bitter" or "embittered." It's a descriptive word that goes beyond simple emotions, suggesting a deep-seated resentment or unhappiness.
In the song, the lyrics mention "que sin caricias estudiaste amargado" (that without caresses you studied embittered). This phrase paints a vivid picture of someone who has become bitter due to a lack of affection, making it an interesting and emotionally charged word choice.
El Chaval De La Bachata is here to tell us a story about trust, rumors, and love in his song "No Creo Nada" [I Don't Believe Anything]. He's heard some things, like when his partner is with him, their mind is elsewhere, or that they're "amargado" [bitter] without affection. There are even whispers that if he's not around, someone else will take his place!
But our singer isn't having any of it. He asks, "para que tú te atreves a vengar a alguien lo que yo me he ganado con mil caricias que nadie se ha inventado" [why do you dare to avenge someone for what I have earned with a thousand caresses that no one has invented]? He's earned his love with genuine affection, and he's not going to let gossip get in the way. He declares, "no creo nada porque no es mi baby" [I don't believe anything because it's not my baby], suggesting that these rumors aren't coming from his partner. He believes that people are trying to separate them with lies, but he's chosen this person to form a family, and he won't let anyone "se metan en mi vida" [get into my life].