Furthermore synonyms such as as well, additionally, and also. Furthermore is an adverb, and its antonyms are however and nevertheless. Additionally, here are 17 synonyms, related words, and verbs for furthermore.
17 synonyms for furthermore
additionally, also, as well, besides, by the same token, forbye, further, in addition, into the bargain, moreover, on top of that, over and above that, to boot, too, what's more, and withal.