noun
Street Slang
grass
GRASS · noun · slang
Informer (police informant) — from 'grasshopper' = copper.
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Definitions
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Slang for a police informer, derived from Cockney rhyming slang 'grasshopper' = copper.
“Nobody trusts him — everyone knows he's a grass.”
by community
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2
As a verb, 'to grass' or 'to grass someone up' means to inform on them to the police or an authority.
“She grassed him up to the teachers over the cheating.”
by community
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grass In A Sentence
Nobody trusts him — everyone knows he's a grass.
She grassed him up to the teachers over the cheating.
Origin & Usage
From 'grasshopper' rhyming with 'copper'; 'grass' and 'to grass someone up' are now general British slang.
Variants
grasser
People Also Ask
What does 'grass' mean in British slang?
A 'grass' is a police informer or someone who tells on others; 'to grass someone up' means to inform on them.
Where does 'grass' meaning informer come from?
It derives from the Cockney rhyming slang 'grasshopper', which rhymes with 'copper' (a police officer).
Is calling someone a 'grass' an insult?
Yes — it's a strong insult in British culture, where informing on others is heavily frowned upon.
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