Swinishly is an adverb that describes someone or something resembling a pig or pig-like. When looking for synonyms for this word, we first think of words that describe the same disgusting or boorish behavior of someone who is gluttonous, selfish, or lacking in good manners. Some synonyms that come to mind are slovenly, greedy, filthy, boorish, brutish, coarse, and uncivilized. Some other synonyms that can be used in certain contexts include piggish, hog-like, porcine, or piggy. Regardless of the words used, the meaning remains the same. Swinishly is a negative description that should be avoided at all times.