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
Cite this Entry
“Know something backward and forward.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/know%20something%20backward%20and%20forward. Accessed 31 Dec. 2024.
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