/ɡr?s/UKslangIf apersongrasseson someoneelse, theytellthepoliceor someone inauthorityabout somethingbadthat thatpersonhas done:Dan grassed on themtothelocalpolice.SMART Vocabulary: related words and phrasesRevealing secrets & becoming known
(the) word is/gets outidiom
anti-secrecy
backchannel
bare
blowsomeone'scoveridiom
blow/take the lid offsomethingidiom
break
declassify
hold
leakage
Queen's evidence
rat onsomeone/something
reintroduce
revealingly
revelatory
shed
state's evidence
tip
transpire
unload
See more results ?(Definition ofgrass on someonefrom theCambridge Advanced Learner's Dictionary & Thesaurus? Cambridge University Press)#https://dictionary.cambridge.org//dictionary/english/grass-on##