1. A closed book
Meaning: To be difficult to know or understand.
Example: I’m a scientist, so art will always be a closed book to me.
2. An open book
Meaning: Someone that is easy to know about because nothing is kept secret.
Example: Ask me anything, I’m an open book.
3. Read someone like a book
Meaning: To understand easily what someone or thinking or feeling
Example: There are a number of books on the market which suggest that it is possible to learn to read a person like a book.
4. The oldest trick in the book
Meaning: A dishonest action that has been used many times before
Example: Look, you can fix it by threading a paper clip through the hole. Oldest trick in the book!
5. In someone’s good books
Meaning: Used for saying that someone is pleased with you
Example: I cleaned the bathroom yesterday so I’m in Mum’s good books.
6. By the book
Meaning: Following all the rules for doing something in a strict way
Example: The lawyers want to make sure we’ve done everything strictly by the book.
7. Bring someone to book
Meaning: To punish someone when they have done wrong
Example: Police should be asked to investigate so that the guilty can be brought to book soon.
8. Take a leaf out of someone’s book
Meaning: To copy what someone else does because they are successful at doing it
Example: I think I’m going to take a leaf out of your book and start going for a run first thing in the morning.
9. Don’t judge a book by its cover
Meaning: Not to form an opinion about someone only from their appearance
Example: The candidate did not look very intelligent, but you can’t judge a book by its cover.
10. Cook the books
Meaning: To change accounts and figures dishonestly, usually to get money
Example: My partner had been cooking the books for years, but because I was the CEO, I got the blame for our company’s collapse.
Meaning: A keen reader
Example: My sister is a bookworm. She is always reading.
12. Book smart
Meaning: Possessing knowledge acquired from reading or study but lacking common sense
Example: Sure, she's book smart, but she can't cook a potato!
13. In my book
Meaning: In my opinion
Example: She's never lied to me, and in my book that counts for a lot.
14. On/off the books
Meaning: Officially on record/ unofficially and usually in secret
I worked off the books in my uncle's restaurant for a few months during the summer.
Today is officially the hottest day on the books.
15. To close the books
Meaning: To put something aside and stop spending time and effort on it
Example: I think it's time for me to close the books on this situation because I'm clearly never getting my money back.
16. To hit the books
Meaning: To study
Example: I can't go out tonight. I need to hit the books.
17. To have your nose in a book
Meaning: To be reading intensely
Example: She always has her nose in a book.
18. To throw a book at
Meaning: to punish severely
Example: The judge was not lenient – he threw the book at him.
19. Every trick in the book
Meaning: All available methods of achieving what’s desired, every possible way.
Example: I've tried every trick in the book to get him to notice me, and still no luck!