You know what it looks like… but what is it called?
TAKE THE QUIZ“book on”
We have one entry that includes the term book on.
wrote the book on
idiom—used to say that someone is an expert on a particular subject
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- Rachel seemed to be _____ in every endeavor she started.
You can make only 12 words. Pick the best ones!
PLAYLove words? Need even more definitions?
Merriam-Webster unabridged