furthermore
- 1Used to introduce an additional point that supports or extends what was just stated.
The proposal is expensive; furthermore, it offers no clear benefit to local residents.
She argued that the policy was unfair and, furthermore, that it broke existing law.
Similarmoreover, additionally, besides, also, further
Note
Built in Middle English from further plus -more, it was spelled forthermore or forthermar and sometimes still written as two words, forther mo. It usually opens a clause and is set off by commas, often after and or but: "and, furthermore, he stayed late." Plain further can do the same linking job ("He claimed further that…"). The longer form is the one formal, argumentative prose prefers.
Less common meaning
- 2comparative form of further: more further; the more especially forward, ahead or (figurative) progressed
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Origin
From Middle English furthermore (also forthermore and forther mo), formed from "further" plus the ending "-more".