Usages of incapaz
Mi hija es incapaz de mentir.
My daughter is incapable of lying.
Es incapaz de pedir perdón.
He's incapable of saying sorry.
No es que el novato sea incapaz, sino que nadie le explica nada.
It's not that the newbie is incapable, but that nobody explains anything to him.
Elon.io is an online learning platform
We have an entire course teaching Spanish (Spain) grammar and vocabulary.