That it is either raining, or the sky is sad therefor it is crying. Or he means both.
He first decides to ignore him. Then, later, he takes <span>Teiresias' prophecy seriously and goes to release Antigone from her tomb, and he is too late because the prophecy had been fulfilled.</span>
A hyperbole is an exaggerated statement, something that sounds bigger than it actually is.
The opposite of that would be making something sound smaller, not as bad or not as good, etc, as it actually is, like an understatement.
<span>Depends on where you draw the line for "most commonly used." But with the question at hand, I would say 4/5</span>