know best

idiom
variants: or know what's best

Definition of know best

: to know or understand better than someone else what should be done I would take the highway myself, but you live here so you know best. I'll do whatever you say. You know what's best.

Learn More About know best

Dictionary Entries Near know best

know-all

know best

know better

See More Nearby Entries 

Statistics for know best

Cite this Entry

“Know best.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/know%20best. Accessed 26 Jan. 2022.

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?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

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!