Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

ad lib

adverb

Definition of ad lib

  1. 1 :  in accordance with one's wishes

  2. 2 :  without restraint or limit



Origin and Etymology of ad lib

New Latin ad libitum


First Known Use: 1794


Medical Dictionary

ad lib

play
adverb \(ˈ)ad-ˈlib\

Medical Definition of ad lib

  1. :  without restraint or imposed limit :  as much or as often as is wanted <the animals were given water ad libScience>—often used in writing prescriptions




Learn More about ad lib


Seen and Heard

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

WORD OF THE DAY

not forbidden by law

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

two-chairs-on-a-pier-by-the-ocean-in-summer

Which of the following words means “of or relating to summer”?

vernal brumal estival hiemal
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ