Insensible (en. Insensitive)

/in.sen.si.ˈble/

Slang Meanings

Doesn't matter
He is so insensitive that he doesn't care what they say about him.
Es tan insensible que no le importa lo que digan de él.
Cold-hearted
He is an insensitive person; he never worries about others.
Es un insensible, nunca se preocupa por los demás.