rule of reason

Legal Definition of rule of reason

: a standard used in restraint of trade actions that requires the plaintiff to show and the factfinder to find that under all the circumstances the practice in question unreasonably restricts competition in the relevant market — compare per se rule sense 2

Note: The rule of reason does not apply to per se violations of the Sherman Antitrust Act.

Learn More about rule of reason

Cite this Entry

“Rule of reason.” Merriam-Webster.com Legal Dictionary, Merriam-Webster, https://www.merriam-webster.com/legal/rule%20of%20reason. Accessed 26 Sep. 2020.

Comments on rule of reason

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

WORD OF THE DAY

Test Your Vocabulary

Challenging Vocabulary Quiz Returns!

  • stylized drawing of woman pole vaulting across gap to get trophy
  • Which is a synonym of fuliginous?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Citation

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!