know what one is talking about

idiom

Definition of know what one is talking about

: 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."

Learn More About know what one is talking about

Dictionary Entries Near know what one is talking about

know what it means

know what one is talking about

know which side one's bread is buttered on

See More Nearby Entries 

Statistics for 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 29 Jul. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!