primarily

Primarily is an adverb meaning mainly, chiefly, or for the most part. It is used to indicate the main purpose, source, or characteristic of something. In sentences, it often modifies a verb, an adjective, or a noun phrase, as in “The project was primarily funded by private donors” or “Her concerns are primarily about safety.”

Etymology and pronunciation: Primarily derives from the adjective primary, which traces to the Latin primarius ‘of first rank’ from primus ‘first.’ The adverbial form with the -ly suffix dates from Middle English. The standard pronunciation is PRAI-muh-ruh-lee.

Usage notes: While primarily and principally are often interchangeable in everyday writing, there are subtle distinctions. Primarily tends to indicate the main purpose or main factor in a situation, whereas principally can emphasize the chief element within a group or the main person responsible. In formal or technical writing, the choice may reflect a focus on different aspects of the claim: primarily for the primary reason or objective, principally for the principal element or actor.

Examples: “The study focuses primarily on data collection methods.” “The policy is principally about safety rather than efficiency.” “The report’s recommendations are primarily directed at policymakers.” These examples illustrate how the word guides the reader to what is most important in a statement.

See also: primary, principal, principle.