Murphy's Law

noun

Definition of Murphy's Law 

: an observation: anything that can go wrong will go wrong

First Known Use of Murphy's Law

1951, in the meaning defined above

History and Etymology for Murphy's Law

probably from Edward A. Murphy †1990 American engineer

Keep scrolling for more

Learn More about Murphy's Law

Share Murphy's Law

Dictionary Entries near Murphy's Law

muromontite

muron

Murphy

Murphy's Law

Murphy bed

murr

murra

Statistics for Murphy's Law

Look-up Popularity

Time Traveler for Murphy's Law

The first known use of Murphy's Law was in 1951

See more words from the same year

More from Merriam-Webster on Murphy's Law

See words that rhyme with Murphy's Law

Comments on Murphy's Law

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

WORD OF THE DAY

obstinately defiant of authority

Get Word of the Day daily email!

Test Your Vocabulary

Autumn Words of the Day 2018

  • a-top-down-image-of-road-through-an-autumn-forest
  • Which is a synonym of fugacious?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
SCRABBLE® Sprint

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!