know something backward and forward
idiom
: to know something completely
He knew the process backward and forward.
Dictionary Entries Near know something backward and forward
know something backward and forward
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“Know something backward and forward.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/know%20something%20backward%20and%20forward. Accessed 25 Apr. 2024.
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