Aquel (en. That)
/aˈkel/
Slang Meanings
It is used colloquially to refer to something distant or less important.
That task is like that one that never arrives.
Esa tarea es como aquel que nunca llega.
It can be used to refer to someone in a derogatory way.
I don't know why he always complains.
No sé por qué aquel siempre se queja.