Part of speech: Adverb
in addition
Example: 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
Furthermore, Moreover, What is more
The word "moreover" comes from Middle English moreover.
more – A related word in the same word family.
over – A related word in the same word family.
Chaucer's Canterbury Tales show how creatively Middle English speakers mixed vocabularies.