Dictionary.com
Thesaurus.com

supergrass

British  
/ ˈsuːpəˌɡrɑːs /

noun

  1. an informer whose information implicates a large number of people in terrorist activities or other major crimes

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The key witness in convicting the suspects - Jack Whomes and Michael Steele - was police informer and so-called supergrass Darren Nicholls, from Braintree, who gave evidence against his former friends at their trial.

From BBC Feb. 14, 2025

Police work with three supergrass witnesses - criminals who are giving information.

From BBC Jun. 14, 2021

The lilies and chrysanthemums were far more delicate than the government-enforced supergrass, but at least they were of her choosing.

From Slate Feb. 21, 2018

That colleague, who will be central to any new investigation, is Neil Putnam, a self-confessed corrupt detective turned supergrass.

From The Guardian Jun. 3, 2014

Evidence from just one supergrass, Christopher Black, has led to 35 convictions, including that of Kevin Artt.

From Time Magazine Archive

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember new words for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com