Why does Elizabeth refuse Mr. Collins?

Elizabeth refuses because Collins offers a marriage without mutual respect. His proposal is a checklist — duty to Lady Catherine, convenience of the entail, the assumption that she cannot mean “no” — not an address to her as a person. She already sees his vanity and silliness; accepting him would secure Longbourn’s future at the price of daily absurdity and intellectual loneliness.

The refusal is also a moral stance inside an economic trap. Mrs. Bennet treats the proposal as salvation; Mr. Bennet, for once, backs Elizabeth. Austen lets the reader feel both the family’s panic and Elizabeth’s clarity. Compared with Charlotte’s later acceptance of the same man, Elizabeth’s “no” defines the standard of happiness she will insist on — even before Darcy becomes a credible alternative.