Portuguese edit

Etymology edit

Different origins are proposed. One relates it to Secret Agent X-9, a comics detective character. Another one connects it to the inmates of "pavilion 9" of the former Carandiru Penitentiary, many of which were informers.

Pronunciation edit

 
 

Noun edit

X9 m or f by sense (plural X9s)

  1. (Brazil, slang) snitch, informer, grass
    Synonyms: dedo-duro, delator, linguarudo