Ask someone to define "irony" and then sit back and enjoy the blank stare.
Webster is correct as usual. It is a resentment against the advantage, real or imagined, of others.
It's the motivation for all kinds of evils. It's the reason kids shoot each other over sneakers and jackets. It's the reason redistributionist schemes nearly always enjoy wide public support.
It's also dangerously easy to fall into being envious. One must guard oneself constantly lest it take over.
As I said above envy combined with a bit of power over others is quite often lethal.
L
One of the strangest form of envy is against someone else's good idea or deeds. Watch out in a bureaucratic society where honor is institutionalized.