What is another word for knows backwards and forwards?
Pronunciation: [nˈə͡ʊz bˈakwədz and fˈɔːwədz] (IPA) 
"Knows backwards and forwards" is a well-known idiom that refers to a deep understanding of a topic or subject matter. There are several synonyms that can be used in its place, such as "knows inside out," "knows like the back of their hand," and "knows like a pro." Other alternatives include "knows every inch," "knows every nook and cranny," "knows like a scholar," and "knows like an expert." The bottom line is that all of these synonyms indicate a mastery of a subject, and they can be used interchangeably with "knows backwards and forwards" to show a deep understanding of a particular topic or field.
