know what one is talking about
idiom
: to be saying what is correct from actual knowledge or experience with something
Take her advice. She knows what she's talking about.
"He said the movie is boring." "Don't listen to him. He doesn't know what he's talking about."
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know what one is talking about
Cite this Entry
“Know what one is talking about.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/know%20what%20one%20is%20talking%20about. Accessed 23 Nov. 2024.
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