Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “supergrass”

supergrass

noun [C]     /ˈsuː.pə.ɡrɑːs/ US  /-pɚ.ɡræs/ UK
a person , especially a criminal , who gives the police a lot of information about the activities of criminals , especially serious ones People who reveal secrets and tell tales
(Definition of supergrass noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of supergrass

Translations of “supergrass”

Word of the Day

drizzle

to pour liquid slowly over something, especially in a thin line or in small drops

Word of the Day

Blog

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