is rude
Es grosero conversar en medio de un concierto.
It’s rude to talk during a concert.
It's not rude.
Él es grosero, arrogante e ignorante.
He is rude, arrogant, and ignorant.
Es grosero interrumpir a los demás.
It is rude to interrupt others.
¿No piensas que es grosero darle a la gente una respuesta tan cortante como esa?
Don't you think it's rude to give people such a curt response?