supergrass

/ (ˈsuːpəˌɡrɑːs) /

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noun

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

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Words nearby supergrass

Super Glue, supergovernment, supergrade, supergranulation cell, supergraphics, supergrass, supergravity, supergroup, superharden, superheat, superheavy

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

How to use supergrass in a sentence

The new names were handed over by a suspect turned "supergrass".
Diana's Boyfriend Fears Phone Was Hacked|Tom Sykes|March 16, 2013|DAILY BEAST
All this is small beer compared with the supergrass that BCL Burton Copeland may turn out to be.
Murdoch’s Lawyers Turn on Him|Sam Bungey|August 18, 2011|DAILY BEAST