FURTHERMORE
furthermore, moreover, what is more
(adverb) in addition; “computer chess games are getting cheaper all the time; furthermore, their quality is improving”; “the cellar was dark; moreover, mice nested there”; “what is more, there’s no sign of a change”
Source: WordNet® 3.1
Etymology
Adverb
furthermore (not comparable)
In addition; besides; what's more; used to denote additional information.
Synonyms
• additionally
• also
• moreover
• what is more
Source: Wiktionary
Fur"ther*more", adv.
Definition: or conj. Moreover; besides; in addition to what has been said.
Source: Webster’s Unabridged Dictionary 1913 Edition