Intachable translates to "irreproachable" or "blameless." It's a strong adjective used to describe someone or something that is perfect and beyond criticism.
In the song, Maria Jose declares, "No soy una señora de una conducta intachable, en la vida" (I am not a lady of irreproachable conduct, in life). This word is key to understanding the song's theme of defying societal expectations and embracing a life that isn't perfect, making it both interesting and central to the message.
"No Soy Una Señora" is María José's defiant answer to being judged. She sings about leaving everything behind — her dreams, a lover, any sense of a settled life — and wandering from motel to motel with her face covered and her heart in pieces.
The chorus is the heart of the song: she refuses the label of a proper, impeccably-behaved "señora." Instead she owns the mess — a life spent fighting a losing battle for love, used and left behind by someone she trusted completely.
It's a song about heartbreak without shame. She isn't asking for sympathy or approval; she's simply telling the truth about who she became after love fell apart.