additionally

Additionally is an adverb used to introduce an extra point or to add information that complements what has already been stated. It functions as a conjunctive or sentence adverb, connecting ideas across clauses or sentences.

Etymology and formation: the word is formed from the adjective additional by adding the suffix -ly. It is primarily used in formal or written English to signal that something more is being added to a previous statement. The form is closely related to other formal connectors such as furthermore, moreover, and in addition.

Usage and style: as a conjunctive adverb, additionally often follows a semicolon or appears at the beginning of a new clause, usually followed by a comma. It can appear in mid-sentence after a coordinating conjunction or after a dash in more flexible style. In informal speech or everyday writing, words like also, besides, or plus are more common. Additionally is best used to introduce information that strengthens or expands an argument, a plan, or a description, rather than to present a direct contrast.

Examples:

- The project will require funding. Additionally, it will require ongoing staff training.

- The report covers the financial outcomes; additionally, it assesses environmental impact.

- The software update improves performance. Additionally, it fixes several security vulnerabilities.

Alternatives and nuance: other formal connectors with similar meaning include furthermore, moreover, and in addition. Use additionally when you want a precise sense of adding related information rather than simply listing items. It is most common in formal writing contexts such as academic, technical, or policy documents.