In vain did Elizabeth endeavour to check the rapidity of her mother’s words, or persuade her to describe her felicity in a less audible whisper; for, to her inexpressible vexation, she could perceive that the chief of it was overheard by Mr. Darcy, who sat opposite to them. Her mother only scolded her for being nonsensical.

– Jane Austen

Pride and Prejudice, Chapter 18. Elizabeth tries to stop the irrepressible Mrs. Bennet from speaking out loud about an imminent marriage between Jane and Mr. Bingley. But she cannot shut her up, and to Elizabeth’s mortification Mr. Darcy overhears all.