Meaning of the word "an open book" in English
What does "an open book" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.
an open book
US /ən ˈoʊpən bʊk/
UK /ən ˈəʊpən bʊk/
Idiom
a person or thing that is easy to understand or know about
Example:
•
She's always been an open book; you never have to guess what she's thinking.
•
His past is an open book; there are no secrets.