"Become liable for" is an expression used to indicate that someone will be responsible for something in the future. There are various synonyms for this phrase that can be used interchangeably to convey the same meaning. Some of these synonyms include "incur liability," "take on responsibility," "assume liability," "bear the burden," "carry the can," "face the music," "pay the price," and "pay the consequences." All of these expressions serve to imply that someone is going to experience the negative consequences of their actions and will be held accountable for what they have done. Regardless of which synonym is used, the meaning is clear - someone has to pay for what they have done.