What is another word for belt down?
Pronunciation: [bˈɛlt dˈa͡ʊn] (IPA) 
"Belt down" is a phrasal verb used to describe the act of drinking a beverage quickly and in large amounts. There are several synonyms for this term that can be used instead, such as "chug," "guzzle," or "swig." Each of these terms conveys the same idea of consuming a drink quickly and in one go. Other synonyms for "belt down" include "slam," "down," and "knock back." Each of these terms can be used interchangeably with "belt down" to add variation to writing or conversation. Whether you choose to "chug" your drink or "knock it back," the meaning remains the same.
