What is another word for knew ins and outs?
Pronunciation: [njˈuː ˈɪnz and ˈa͡ʊts] (IPA) 
"Knew ins and outs" is a common phrase used to express a comprehensive understanding of a certain topic or situation. To convey the same idea, one could use synonyms such as "familiarized oneself with," "mastered the intricacies," "gained expertise," "became well-versed," "earned proficiency," or "acquired thorough knowledge." Each of these synonyms conveys a level of expertise and understanding that goes beyond surface-level understanding, similar to the original phrase. Whether discussing a hobby, job, or personal interest, being able to use an alternative phrase such as these can provide variety and enhance the clarity of writing or speech.
