Which word best represents the act of drinking quickly or greedily?

The word that best captures the act of drinking quickly or greedily is "guzzle." This term is often used to describe consuming a beverage in a hurried or excessive manner, suggesting a sense of urgency or a lack of restraint. When someone guzzles a drink, they typically do so with little regard for moderation, indicating a voracious or desperate need to consume.

In contrast, "quench" refers to the act of satisfying thirst rather than the manner in which the drink is consumed. "Quaff" can imply drinking heartily but may not necessarily carry the same connotations of speed or greed. Lastly, "sip" is explicitly about taking small, measured amounts of a drink, which is the opposite of drinking quickly or greedily. Therefore, "guzzle" is the most fitting choice to represent that specific action.