篤duk1灰fui1

English

1. to rat on someone; to point someone out as the guilty party [colloquial]
2. to turn in or report someone to the police or the authorities (often anonymously); to blow the whistle; often carries negative connotations of betrayal

粵語 — Cantonese

1. 暗中指證罪魁禍首，類似告密、篤背脊、做二五仔

Examples

• 示威者要小心唔好俾途人篤魁。

  Protesters should be careful not to get recognized by bystanders and get reported to the police.

• 佢俾人篤灰話佢公司裝老翻，可能係佢得罪咗啲舊伙記。

  Authorities were tipped off that his company uses pirated software; it might be due to his poor treatment of ex-employees.