RELATED: The Hunger Games: The Capitol, Explained An Avox is an individual who has been found guilty of treachery or rebellion by the government of Panem, and is punished by having their tongues ...
In both "The Hunger Games" and "Far From the Madding Crowd ... In the saga, Pollux is what's known as an avox, a criminal who has their tongue cut out leaving them unable to speak.
Even before participating in the reaping and taking her sister's place in the Hunger Games, Katniss lived her life in defiance of the Capitol, and becoming an Avox could've been her fate.