Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “secret”


noun [C]     /ˈsiːkrət/
an important piece of information that only a few people know and that should not be told to anyone else: The ingredients of the drink are a closely-guarded secret. a national/military/state secret
→ See also trade secret
(Definition of secret noun from the Cambridge Business English Dictionary © Cambridge University Press)
Focus on the pronunciation of secret

Browse related topics

You are looking at an entry to do with Secrecy and privacy, but you might be interested in these topics from the Showing and hiding topic area:

Definitions of “secret” in other dictionaries

Word of the Day


willing to give money, help, kindness, etc., especially more than is usual or expected

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