chiefly
Americanadverb
-
primarily; essentially.
He phoned chiefly to let us know he was feeling better.
-
mainly; mostly.
This dish consists chiefly of noodles.
adjective
adverb
-
especially or essentially; above all
-
in general; mainly; mostly
adjective
Synonym Usage
See especially.
Etymology
Origin of chiefly
Middle English word dating back to 1300–50; see origin at chief, -ly
Explanation
Use the adverb chiefly to mean "mostly" or "primarily." You could say your history class is chiefly focused on 18th century American history if all your teacher wants to talk about is the American Revolution. If you usually ride your bike to work, you can say, "I'm chiefly a bicycle commuter," and your neighbor's obituary might mention that she'll be chiefly remembered for her work as a civil rights activist in the 1960s. You can also use chiefly to mean "for the most part," when you talk about the contents or composition of something: "My granola is chiefly almonds." The word comes from the Old French chief, "principal" or "first."
Vocabulary lists containing chiefly
Essential English Vocabulary, List 7
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The Horse and His Boy
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Bad Boy
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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.
Chiefly, they are relatively immune when the stock market loses liquidity and investors rush to safety.
From MarketWatch • Mar. 12, 2026
Chiefly, it was unclear whether he meant testing weapons systems or actually conducting test explosions -- something the United States has not done since 1992.
From Barron's • Oct. 30, 2025
The East Ayrshire town plans to mark the anniversary of the poet's funeral and the publication of Poems, Chiefly in the Scottish Dialect with a festival featuring poetry and music.
From BBC • Jul. 23, 2023
Chiefly, it removes an element of uncertainty from the process, Gerard said.
From Seattle Times • Mar. 12, 2023
Chiefly in the difference of the term of service.
From Blackwood's Edinburgh Magazine, Volume 60, No. 370, August 1846 by Various
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.
