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

Share know best

Statistics for know best

Look-up Popularity

Comments on know best

What made you want to look up know best? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to boil down or concentrate

Get Word of the Day daily email!

Test Your Vocabulary

Original Meanings Quiz

  • rembrandt-painting-a-young-scholar-and-his-tutor
  • Which of the following is the earliest known sense of the word awe?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

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!