What does additionally mean?
Additionally is an adverb meaning "in addition" or "as well": it introduces an extra fact, reason, or item beyond those already mentioned. It functions as a connective, linking a new statement to what precedes it and signalling that the speaker or writer is building up an argument or list. For example, one might write, "The course covers grammar; additionally, students practise conversation weekly." The word carries a neutral but somewhat formal tone, which makes it a staple of academic essays, business reports, journalism, and polished presentations, while everyday speech tends to favour lighter alternatives such as "also" or "plus." It usually begins a sentence or clause and is set off by a comma. Derived from the Latin root addere, "to give to" or "to add," it belongs to a family including addition, additional, and additive. Mastering additionally helps writers connect ideas smoothly and signal structure clearly to readers.
adverbIn addition to what has been stated; as an extra or supplementary point.
- Used to introduce an additional point or fact: 'as well as that', 'furthermore'.
"The hotel offers free breakfast; additionally, guests can use the gym at no charge."
"The software is easy to learn; additionally, it integrates with most existing tools."
"She holds a degree in chemistry. Additionally, she has ten years of laboratory experience."
Despite sounding like stiff corporate jargon, "additionally" is simply the adverb form of one of the oldest words in English arithmetic — the humble act of adding.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of additionally
Additionally derives from the verb add, which English borrowed from Latin addere, meaning "to give to" or "to join to," formed from ad- ("toward") plus dare ("to give"). The noun addition entered English from Latin via Old French in the late Middle Ages, and the adjective additional followed in the early modern period. Additionally arose as the adverbial form of additional, first appearing in written English around the early 17th century. It shares its ultimate Latin root with related words such as additive and addendum.
Related word forms
How additionally is actually used
Register is neutral-to-formal; it is especially common in academic writing, business reports, and formal speech, where it signals that another supporting point follows. In casual conversation, speakers more often say "also" or "plus". It typically appears at the start of a sentence or clause, usually followed by a comma.
Easily confused with additionally
"Additionally" is a single adverb used to introduce an extra point, while "in addition" is a prepositional phrase with the same function — they are interchangeable in most contexts but differ in form.