1. "The Lord of the Rings" by J.R.R. Tolkien: The word "fortnight" is used multiple times in the book, particularly in the passages where the characters discuss the timeline and travel arrangements for their quest.
2. "Pride and Prejudice" by Jane Austen: The word "fortnight" appears in the novel when the Bennet sisters are making plans to visit their relatives and calculating how long it will take to travel to and stay at their destination.
3. "A Tale of Two Cities" by Charles Dickens: In Dickens' classic novel, the word "fortnight" is used to describe the time period leading up to the French Revolution.
4. "Around the World in Eighty Days" by Jules Verne: This adventure story involves a wager to circumnavigate the globe in 80 days. The word "fortnight" appears when calculating the remaining days for the protagonist, Phileas Fogg, to complete his challenge.
5. "The Diary of a Young Girl" by Anne Frank: In Anne Frank's diary, she occasionally mentions the passage of time in terms of fortnights as she chronicles her experiences during the period when she and her family were hiding in the secret annex.
6. "The Chronicles of Narnia: The Voyage of the Dawn Treader" by C.S. Lewis: The word "fortnight" appears in this installment of the Narnia series as the children discuss their sailing plans and the amount of time it will take them to reach their destination.
7. "The Importance of Being Earnest" by Oscar Wilde: In this witty play, the word "fortnight" is used humorously by one of the characters, Algernon Moncrieff, when he mentions his plans for bun-eating expeditions and proposes to spend a "whole fortnight" in the country.
These are just a few examples of books where the word "fortnight" appears, reflecting the diverse usage of the term in literary works.