supergrasssu‧per‧grass /ˈsuːpəɡrɑːs $ -pərɡræs/ noun [countable] 
Examples
ExamplesEXAMPLES FROM THE CORPUS
word sets- And almost 10 years ago Atcheson was arrested and charged on the evidence of loyalist supergrass James Crockard.
- Both turned supergrass and were the main prosecution witnesses in the trial of the other men.
- Four of those are of supergrasses.
- From 1993 the state hit back with troops, new laws and supergrasses.
- Local bully Billy Hodge is about to turn supergrass under pressure from his wife.
- Prosecutors said the allegation was made long ago by an unreliable supergrass, and no investigation is expected.
- The report, drawn from evidence given by supergrasses, identified those whom the Mafia considered allies or potential allies.
WORD SETS► Crime
British English informal a criminal who gives the police information about many other criminals, in order to get a less severe punishmentabet, verbaccusation, nounaccuse, verbaffray, nounarson, nounassault, nounassault and battery, nounbackhander, nounbattery, nounbigamy, nounblack market, nounblack marketeer, nounbreak-in, nounbreaking and entering, nouncaper, nouncapital, adjectivecarjacking, nouncat burglar, nouncontract, nouncosh, nouncounterfeit, adjectivecounterfeit, verbcover, nouncrack, verbcriminal, adjectivecriminal, nouncriminal law, nouncriminal record, nouncriminology, nouncrook, nounculpable, adjectiveculprit, noundefamation, noundefraud, verbdelinquency, noundelinquent, adjectivedelinquent, noundesperado, noundisorderly, adjectivedrug baron, noundrug runner, nounDUI, nounembezzle, verbexpropriate, verbextort, verbeyewitness, nounfelon, nounfelony, nounfence, nounfiddle, nounfiddle, verbfiddler, nounfilch, verbfinger, verbfire-raising, nounfirst offender, nounflash, verbflasher, nounforge, verbforger, nounforgery, nounfoul play, nounframe, verbframe-up, nounfratricide, nounfraud, nounfreebooter, noungang, noungang-bang, noungang rape, noungangster, nounGBH, noungenocide, noungetaway, noungodfather, noungrand larceny, noungrass, noungrievous bodily harm, nounheist, nounhijack, verbhijack, nounhijacking, nounhit, nounhit-and-run, adjectivehit man, nounincriminate, verbindecent assault, nounindecent exposure, nouninfanticide, nounjob, nounjoyriding, nounjuvenile delinquent, nounkidnap, verblarceny, nounlibel, nounlibel, verblibellous, adjectivelow life, nounmafioso, nounmalpractice, nounmanslaughter, nounmassacre, nounmassacre, verbmatricide, nounmisappropriate, verbmisconduct, nounmisdeed, nounmisdemeanour, nounmobster, nounmoll, nounmug, verbmugshot, nounmurder, nounmurder, verbmurderer, nounmurderess, nounmuscleman, nounnark, nounnefarious, adjectiveneighbourhood watch, nounnick, verbno-go area, nounoffence, nounoffend, verboffender, nounold lag, nounorganized crime, nounoutlaw, nounparricide, nounpatricide, nounpetty larceny, nounPhotofit, nounpiracy, nounplant, verbpoach, verbpoacher, nounpossession, nounprivateer, nounprotection, nounprowl, verbprowler, nounpublic nuisance, nounpull, verbpunk, nounpurloin, verbraid, nounram-raiding, nounrape, verbrape, nounrapist, nounravish, verbreceiver, nounreceiving, nounrecidivist, nounregicide, nounring, nounringleader, nounriotous, adjectiverob, verbrobber, nounrobbery, nounroll, verbrustler, nounscheme, nounscheme, verbshady, adjectiveshoplift, verbshoplifting, nounslander, nounsmuggle, verbsnout, nounspeeding, nounstabbing, nounstalking, nounstatutory offence, nounstatutory rape, nounsteal, verbstoolpigeon, nounsupergrass, nounsuspect, nounswag, nountheft, nounthief, nounthievish, adjectivetorch, verbtraffic, nountrafficker, nountriad, noununder-the-counter, adjectiveunderworld, nounundesirable, nounvagrancy, nounvandal, nounvandalism, nounvandalize, verbvice, nounvigilante, nounvillainy, nounviolate, verbviolation, nounwanted, adjective