in one's book
The idiom "in one's book" is used to express personal opinions or judgments.
🇺🇸 US Voice:
🇬🇧 UK Voice:
Definition
B2General
(informal)According to one's personal opinion or belief.
Example
- In my book, honesty is the most important quality.
- He's a hero in her book for saving the dog.
Similar
Terms that have similar or relatively close meanings to "in one's book":
on the booksin one's headin someone's vocabularyby the bookin someone's eyesin one's own timebook inon one's plateon one's sideon one's own accounton someone's accountin one's sightsin oneafter one's own hearthave one's name onon one's mindin a wordon one's honorin one's bones