Satire is a very potent tool by which Elizabeth, the protagonist gets back at the patriarchal norms in Pride and Prejudice.
Explanation:
Mr Collins is s distant cousin of Mr Bennet. HE is a clergyman and holds enormous property in the Rosing's park, the estate he own because of his patroness Lady Catherine De Bourgh.
He is essentially a buffoon at worst and a lascivious man at best as he tries to use his money to persuade one of the girls of Mr Bennet to marry him as well as not give them his estate.
The sharp rebuttals he gets from Elizabeth fend him off from her considerably.