inappropriate, unsuitable, inadequate
Sabes, eres tan inadecuado para mi hija.
You know, you're so unsuitable for my daughter.
— Una batalla tras otra (2025)
Dora, cuando tenía tu edad, tuve un matrimonio inadecuado.
Dora, when I was your age, I had an unsuitable marriage.
— La historia de David Copperfield (2019)
Jules es un nombre tan inadecuado que le queda bien.
Jules is such an unsuitable name that it suits him.
— Diva (1981)
His vocabulary is inappropriate.
That would be inappropriate.