unknown quantity

noun

Definition of unknown quantity

: someone or something whose abilities or characteristics are not yet known If you've never been published before, you're an unknown quantity, so you're going to have difficulty selling your first novel.

Comments on unknown quantity

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

WORD OF THE DAY

fear of the number 13

Get Word of the Day daily email!

Test Your Vocabulary

Where in the World? A Quiz

  • peter bruegel tower of babel painting
  • What language does pajama come from?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Syn City

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!