Meaning
A police informer or snitch — someone who reports others to the authorities, or who tells people's secrets and business. In street and dancehall culture the informer is among the most reviled of figures, condemned in countless songs ('informer fi dead'); loyalty and silence are prized above all.
Examples
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Nobody nuh trust a informer.
Nobody trusts a snitch.
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Dem brand him a informer an lock him out.
They branded him an informer and shut him out.
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Informer carry news go a police.
The informer carries news to the police.
Origin
From 'informer'; in Jamaican street/dancehall culture a deeply reviled figure, the snitch. Compare 'bag-o-wire' (traitor).
How it’s used
A snitch/police informer — heavily condemned in dancehall ('informer fi dead'). Compare 'bag-o-wire', 'two-mout'.