Furthermore Synonyms: 30 Alternatives Grouped by Register and Context

If "furthermore" is starting to appear three times on every page of your draft, you need alternatives. The challenge isn't finding furthermore synonyms. A thesaurus will give you thirty. The challenge is picking the right one for the register you're writing in, because "moreover" sounds at home in an academic paper while "what's more" reads as conversational and "plus" reads as casual. This guide groups thirty alternatives to furthermore by register, shows each one in a real sentence, and explains when even the best synonym is the wrong move.

Quick Answer: The Best Furthermore Synonyms by Register

Formal academic writing. Moreover, additionally, further, in addition, what is more, beyond this.

Business and professional writing. Also, additionally, as well, in addition.

Conversational and informal writing. Plus, also, on top of that, besides, what's more.

The most common substitute. "Moreover" is the closest direct equivalent in formal writing. "Additionally" works in nearly every register.

The bigger fix. If you're searching for synonyms because you've used "furthermore" three times on the same page, the answer is usually fewer transitional words, not different ones.

What Does Furthermore Mean?

"Furthermore" is a conjunctive adverb. It introduces additional information that supports or extends a previous point. The word signals to the reader that what follows reinforces what came before, rather than contradicting it or shifting direction. "Furthermore" is more formal than "also" and slightly more emphatic than "additionally," which is why it appears most often in academic writing, legal writing, and formal business communication.

Used well, furthermore makes argument structure visible. Used poorly, it makes writing sound stilted, repetitive, or overly formal for the context. Knowing the right synonym depends on knowing what register you're writing in, what you're trying to emphasize, and how the surrounding sentences are constructed.

Furthermore vs. Moreover vs. Additionally: What's the Difference?

These three transitional words are often used interchangeably, but they have subtle differences in register and emphasis that matter in careful writing.

Word	Register	Emphasis	Best use
Furthermore	Formal	Strong; signals an important additional point	Academic writing, formal arguments, building toward a key claim
Moreover	Formal	Strong; often signals that the additional point reinforces the argument	Academic writing, persuasive writing, legal writing
Additionally	Neutral, works in most registers	Moderate; signals additional information without dramatic emphasis	Business writing, technical writing, general academic writing

A practical rule. If the additional point is critical to the argument, "furthermore" or "moreover" emphasize that importance. If the additional point is merely related, "additionally" or "also" carry less weight and don't overstate the connection.

Furthermore Synonyms for Formal Academic Writing

Academic writing benefits from precise transitional language. These synonyms work well in journal articles, dissertations, theses, and formal academic essays.

Moreover. The closest direct equivalent to furthermore. "The study found a strong correlation. Moreover, the relationship persisted across all demographic subgroups."
Additionally. Slightly less emphatic than moreover. "The intervention reduced anxiety scores. Additionally, participants reported improved sleep quality."
Further. Common in academic writing, especially in argumentation. "Further, the data suggest that the effect strengthens over time."
In addition. Slightly more formal than "additionally" because it's spelled out rather than abbreviated into an adverb. "The treatment group showed measurable improvement. In addition, the control group remained stable."
What is more. Signals that what follows is even more important than what came before. "The findings replicate earlier work. What is more, they extend it to a population that earlier studies excluded."
Beyond this. Useful for shifting toward a broader implication. "The mechanism explains the observed effect. Beyond this, it suggests new avenues for clinical research."
Equally important. Signals parallel weight rather than escalation. "Sample size was adequate. Equally important, the demographic composition matched the target population."
It should also be noted that. A formal academic phrase that introduces a related point. "It should also be noted that the survey was administered before the policy change took effect."
Notably. Introduces a particularly significant additional point. "The model performed well across most conditions. Notably, it outperformed the baseline in high-noise environments."
Likewise. Works when the additional point parallels the structure of the previous one. "The qualitative interviews supported the survey findings. Likewise, the focus group data confirmed the pattern."

Furthermore Synonyms for Business and Professional Writing

Business writing favors directness and clarity. The most polished business writers vary transitional language to keep paragraphs flowing without sounding stiff. These synonyms fit emails, proposals, reports, and professional documents.

Also. Direct and unfussy. "We've reviewed the budget. Also, we identified three opportunities for cost reduction."
Additionally. Slightly more formal than "also" without being academic. "The proposal addresses all required deliverables. Additionally, it includes optional value-added services."
As well. Conversational enough for an email, professional enough for a proposal. "The platform supports CRM integration. It handles automated reporting as well."
In addition. Useful when the additional information is substantive. "The contract includes standard service-level agreements. In addition, we've added performance penalties tied to response times."
On top of that. Conversational. Use sparingly in formal documents. "The project delivered ahead of schedule. On top of that, the team came in under budget."
Plus. Casual but acceptable in less formal business contexts. "The vendor offers competitive pricing. Plus, their support team has strong reviews."
Not to mention. Often introduces a clinching additional point. "The new system reduces processing time by 40 percent, not to mention the savings on storage and maintenance."
What's more. Suitable for emails and reports where a slightly more emphatic tone is appropriate. "The team hit every milestone. What's more, they did it while onboarding two new members."
To boot. Conversational and slightly old-fashioned. Use only in informal business writing. "The new hire brought ten years of industry experience to boot."
Coupled with that. Useful when the additional point connects causally with the previous one. "The team delivered on time. Coupled with that, they identified efficiencies for the next sprint."

Furthermore Synonyms for Conversational and Informal Writing

Blog posts, marketing copy, conversational emails, and other informal contexts call for different transitional language. The formal alternatives sound stiff. These options keep your writing conversational.

Plus. The most natural conversational equivalent. "The product is well-designed. Plus, the price beats every competitor I checked."
Besides. Conversational and slightly emphatic. "We don't need a new system. Besides, the existing one works fine."
And. Sometimes the cleanest fix is to drop the transitional word entirely and use "and" with a new sentence. "The food was excellent. And the service matched it."
On top of that. Works well in conversational writing. "The book got rave reviews. On top of that, it's the author's first novel."
What's more. Conversational but slightly more polished than "plus." "The hotel exceeded expectations. What's more, the staff remembered our preferences from a previous stay."
To top it off. Often introduces an unexpected or culminating additional point. "The travel was exhausting, the meeting ran long, and to top it off, the flight home was delayed."
Also. Direct and works in nearly every conversational context. "I love the design. I also like the color options."
And then there's. Useful for introducing an additional consideration in a conversational way. "The interface is intuitive, the performance is fast, and then there's the price, which is hard to beat."
Not only that. Emphasizes that the additional point is significant. "The class taught the fundamentals. Not only that, it included real-world case studies."
To add to that. Useful when the additional point genuinely extends the previous one. "The team worked overtime to meet the deadline. To add to that, they delivered higher quality than expected."

When Not to Use Furthermore (or Any Synonym)

The most common transitional-word problem isn't using the wrong synonym. It's using a transitional word when none is needed. Editors see this constantly in academic and business writing. A new sentence introducing an additional point often doesn't need any signal at all.

Compare these two versions of the same idea.

With transitional word: The study identified three risk factors. Furthermore, it documented a strong dose-response relationship. Additionally, the effect was consistent across subgroups. Moreover, the findings replicated earlier results.

Without transitional words: The study identified three risk factors. It documented a strong dose-response relationship. The effect was consistent across subgroups. The findings replicated earlier results.

The second version is cleaner. The transitional words in the first version don't add information. They just slow the reader down. Use furthermore (or any synonym) when the connection between sentences isn't obvious. Skip them when the connection is clear from context.

Common Transitional Word Mistakes

Using furthermore as a sentence opener too often. Editors call this "transitional word fatigue." If "furthermore" appears more than once or twice per page, the writer is leaning on it as a verbal tic. Replace some instances with simpler alternatives or drop the transitional word entirely.
Using furthermore where moreover would be stronger. "Moreover" carries slightly more rhetorical weight in academic writing. If the additional point is significant, "moreover" reinforces the importance better than "furthermore."
Mixing registers. "Furthermore, the deal is sweet" is jarring because the formal register of "furthermore" clashes with the casual register of "sweet." Match your transitional word to the surrounding language.
Treating "furthermore" and "however" as a matched pair. "Furthermore" introduces additional supporting information. "However" introduces contradictory information. These aren't variations of the same idea.
Using furthermore in spoken communication. The word reads as natural in writing but stilted when spoken. In conversational presentations, "also" or "plus" sounds more natural.
Forgetting the comma. When "furthermore" appears at the start of a sentence, it's followed by a comma. "Furthermore, the data show..." not "Furthermore the data show..."

How Professional Editors Approach Transitional Words

Professional editors evaluate transitional words at three levels. First, they ask whether the transitional word is necessary at all (often it isn't). Second, they ask whether the chosen word matches the register of the surrounding text. Third, they ask whether the transitional word accurately signals the relationship between sentences (additional, contradictory, causal, sequential).

When you submit a manuscript for editing, expect your editor to flag overused transitional words, suggest alternatives where variety would help, and sometimes recommend dropping them entirely. Editor World's academic editing service and professional proofreading service include this kind of attention to transitional language alongside grammar, clarity, and consistency review. Every editor is a native English speaker with an advanced degree, and every manuscript is reviewed by a real person rather than AI.

Frequently Asked Questions About Furthermore Synonyms

What is the best synonym for furthermore?

The closest direct synonym for furthermore in formal writing is moreover. In neutral writing, additionally works in nearly every register. In conversational writing, plus is the most natural substitute. The best choice depends on the register of the surrounding text. Furthermore and moreover both signal additional supporting information with strong emphasis. Additionally and also signal additional information with less emphasis. Plus and besides signal additional information in a conversational way that would be out of place in academic writing.

What does furthermore mean?

Furthermore is a conjunctive adverb that introduces additional information supporting or extending a previous point. It signals to the reader that what follows reinforces what came before. Furthermore is more formal than also and slightly more emphatic than additionally, which is why it appears most often in academic writing, legal writing, and formal business communication. It's rarely used in spoken English.

Are furthermore and moreover the same?

Furthermore and moreover are close synonyms but have subtle differences in emphasis. Furthermore signals an additional point that extends or supports the previous argument. Moreover often signals that the additional point reinforces the argument with particular weight, sometimes implying that what follows is the more important consideration. In most contexts the two are interchangeable, but in careful writing, moreover carries slightly more rhetorical force.

Is furthermore formal or informal?

Furthermore is formal. It's most appropriate in academic writing, legal writing, formal business communication, and persuasive essays. Furthermore reads as stilted in casual writing and unnatural in spoken English. For conversational contexts, simpler alternatives like "plus," "also," or "what's more" sound more natural. For business writing, "additionally" and "in addition" strike a middle register that works in professional contexts without sounding overly academic.

Can I start a sentence with furthermore?

Yes. Furthermore commonly appears at the start of a sentence, followed by a comma. For example: "Furthermore, the data support this conclusion." Starting a sentence with furthermore is grammatically standard and appears throughout formal academic and professional writing. The comma after furthermore is required when the word opens a sentence, signaling the transition from the previous sentence to the additional point that follows.

How do I avoid overusing furthermore?

Vary transitional words across a single document. If furthermore appears more than once or twice per page, substitute moreover, additionally, in addition, what is more, or further depending on the register. Better still, ask whether the transitional word is needed at all. New sentences often introduce additional points clearly without any transitional word, and removing unnecessary transitional language tightens the writing without losing meaning.

What's a more formal word than furthermore?

Furthermore is already among the most formal transitional words in English. More formal alternatives are limited. "What is more" carries similar formality with slightly different emphasis. "Beyond this" works in some academic contexts to introduce a broader implication. "It should also be noted that" is a longer formal phrase used in legal and academic writing. In most cases, the question isn't how to find a more formal alternative but how to maintain formality while varying the language.

What is a casual synonym for furthermore?

The most natural casual synonyms for furthermore are "plus," "also," "what's more," "on top of that," and "besides." Plus is the most conversational option and reads naturally in blog posts, marketing copy, and casual emails. What's more sits between casual and formal, suitable for slightly more polished informal writing. Besides has a slightly emphatic feel that works when introducing a clinching additional point. None of these casual synonyms work in formal academic or legal writing.

More from Editor World

For related guides on word usage and commonly confused words, see our article on further versus farther. For writing services beyond editing, see our professional writing services and rewriting and paraphrasing services. For graduate-level academic editing, see our reviews of the 10 best academic editing services, the 10 best thesis editing services, and the 10 best dissertation editing services. For pricing on professional editing, see how much academic editing costs and how much editing costs.

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