grass up
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English[edit]
Etymology[edit]
From grass (“informer”)[1] + up.
Pronunciation[edit]
Audio (General Australian): (file)
Verb[edit]
grass up (third-person singular simple present grasses up, present participle grassing up, simple past and past participle grassed up)
- (UK, slang) To betray by informing on.
- 1999, Angela Devlin, Bob Turney, Going Straight: After Crime and Punishment, →ISBN:
- My sister grassed me up to the caretaker! She thought she was doing me a favour — by grassing me up she was sure he'd let me off.
Synonyms[edit]
- drop a dime, name names, snitch; See also Thesaurus:rat out