"A good riddance..."See in text(Act II - Act II, Scene 1)
While in today's usage we typically drop the "a" part of this expression, the meaning remains the same: "glad to be rid of you." In this scene, Patroclus, a Greek warrior and close friend of Achilles, expresses relief as Thersites. Thersites enjoys mocking fellow Greeks who claim to be valorous, honorable, and have other such qualities.