Chugalug is a slang term that has different meanings depending on the context. It can refer to the act of chugging down a drink or gulping it quickly. However, if you're looking for alternative words to use instead of chugalug, here are a few suggestions: gulp, quaff, down, swig, slug, drink up, suck down, chug-a-lug, and pound. These synonyms can add variety to your vocabulary and make your writing more interesting. Just remember that each word has its own distinct connotation and usage, so choose the one that best suits your intended meaning.