Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “certain”


adjective   /ˈsɜːtən/
sum certain LAW a particular amount of money stated in an agreement that cannot be changed: The $10 million price is sum certain.
(Definition of certain adjective from the Cambridge Business English Dictionary © Cambridge University Press)
Focus on the pronunciation of certain

Browse related topics

You are looking at an entry to do with Possible and probable, but you might be interested in these topics from the Chance and possibility topic area:

More Business English definitions for “certain”

Definitions of “certain” in other dictionaries

Word of the Day


to direct the way that a ship, aircraft, etc. will travel, or to find a direction across, along, or over an area of water or land, often by using a map

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More