Beautiful tyrant! fiend angelical!
dove-feather'd raven! wolvish-ravening lamb!
despised substance of divinest show!
just opposite to what thou justly seem'st;
a danged saint, an honourable villain! (iii, ii, 80-84)
what are characters doing when they overuse oxymorons?

expressing the depths of paradoxical emotions
sincerely expressing complex emotions in the manner most true to life
trying to confuse the people they are talking to
expressing inauthentic emotions

What the characters are doing when they overuse oxymorons is expressing the depths of paradoxical emotions.

Explanation:

This excerpt uses many oxymorons to express how conflicted the character is since she loves and hates a person at the same time, it is a way to express into a literary form how hectic can the human emotions be and it also demonstrated the strength of this emotions, they go deep inside of the character's soul.

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