primarily

American  

[prahy-mair-uh-lee, -mer-, prahy-mer-uh-lee, -mer-uh-] / praɪˈmɛər ə li, -ˈmɛr-, ˈpraɪ mɛr ə li, -mər ə- /

adverb

1. essentially; mostly; chiefly; principally.

   They live primarily from farming.

2. in the first instance; at first; originally.

   Primarily a doctor, he later became a lawyer.

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primarily British  

/ ˈpraɪmərəlɪ /

adverb

1. principally; chiefly; mainly

2. at first; originally

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Etymology

Origin of primarily

First recorded in 1610–20; primary + -ly

Explanation

Primarily means "for the most part." If in the summer, you primarily work at a restaurant, this is the thing you do most, though you also might hang out with friends, exercise, and read books. You can use the adverb primarily any time you'd use the word "mainly" — today, many people rely primarily on the Internet to get their news. This doesn't mean they never read newspapers or watch television news, but most of the time, they learn about current events online. The Latin root of primarily is primus, which means first — most important, most likely, or what you choose before anything else.

Example Sentences

Primarily, “it’s a great way for us to acquire customers,” he says.

From Barron's • Jun. 11, 2026

Primarily, Starship is expected to serve SpaceX, allowing the company to send satellites, including more advanced models, to orbit more quickly.

From MarketWatch • May 26, 2026

Primarily a sculptor and printmaker, Catlett worked in the social realist tradition and her work often celebrates the dignity of Black and brown working people, especially women.

From Salon • Apr. 6, 2026

Primarily a batter, Jacks offered depth at number eight and has taken four wickets.

From BBC • Jan. 2, 2026

Primarily the difference between people and animals is that people use fire.

From "Woodsong" by Gary Paulsen