primarily
Americanadverb
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essentially; mostly; chiefly; principally.
They live primarily from farming.
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in the first instance; at first; originally.
Primarily a doctor, he later became a lawyer.
adverb
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principally; chiefly; mainly
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at first; originally
Etymology
Origin of primarily
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.
Vocabulary lists containing primarily
The SAT: Language of the Test, List 3
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The Language of Standardized Tests, List 2
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The ACT: The Language of the Test, List 2
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Primarily a batter, Jacks offered depth at number eight and has taken four wickets.
From BBC • Jan. 2, 2026
Primarily, this means minimizing three large, recurring expenses: housing, transportation and food.
From MarketWatch • Oct. 27, 2025
Primarily nocturnal, they can pose a threat to small pets.
From Slate • Sep. 5, 2025
Primarily based in Florida, DeCew has been bouncing back and forth between the southern state, Panama and Mexico.
From Salon • May 18, 2025
“It serves several purposes. Primarily, it is my connection to the circus, but it also functions as a safeguard of a sort. I neglected the fact that it does not cover those outside the fence.”
From "The Night Circus" by Erin Morgenstern
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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.