1. Word Games
  2. Word of the Day
  3. New Words & Slang
  4. Video
 

fail-safe


2fail–safe

noun

Definition of FAIL-SAFE

: a device or measure that makes something fail-safe

First Known Use of FAIL-SAFE

1975

Related to FAIL-SAFE

Learn More About FAIL-SAFE

Browse

Next Word in the Dictionary: fail spot
Previous Word in the Dictionary: faille
All Words Near: fail-safe

Seen & Heard

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

Test Your Vocabulary

Take Our 10-Question Quiz

Name That Thing

Take our visual vocab quiz

Test Your Knowledge »

True or False?

A quick quiz about stuff worth knowing

Take It Now »

Join Us on FB & Twitter

Get the Word of the Day and More

Facebook | Twitter

Get Our Free Apps

Voice Search, Favorites,
Word of the Day, and More

iPhone | iPad | Android | More