What is another word for know backwards forwards?
Pronunciation: [nˈə͡ʊ bˈakwədz fˈɔːwədz] (IPA) 
"Know backwards forwards" is an idiomatic expression which means to have a thorough understanding of something. Its synonyms include having an in-depth knowledge, being familiar with, understanding completely, comprehending thoroughly, and being well-versed in. It also means to be knowledgeable in a particular field, being aware of all the ins and outs of it. Other synonyms of this idiom are to have mastery over something, to have a complete grasp on something, or to have a superior comprehension of a subject. These synonyms imply that the person has acquired a significant amount of knowledge through consistent study, research, or experience in the field.
