chiefly

1 of 2

adverb

chief·​ly ˈchē-flē How to pronounce chiefly (audio)
Synonyms of chieflynext
1
: most importantly : principally, especially
2
: for the most part : mostly, mainly

chiefly

2 of 2

adjective

: of or relating to a chief
chiefly duties

Examples of chiefly in a Sentence

Adverb our video collection consists chiefly of comedies, but we have a few horror movies
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adverb
The Tonys are chiefly meant to honor Broadway theaters but for the past 50 years has also given a Special Tony Award for Regional Theater. Christopher Arnott, Hartford Courant, 8 June 2026 Coal fuel is a major producer of greenhouse gas emissions, chiefly carbon dioxide, driving climate change. Dan Vergano, Scientific American, 4 June 2026
Adjective
Astilbe is a noun meaning any of a genus of chiefly Asian perennial plants of the saxifrage family that have simple or usually compound leaves and are widely cultivated for their panicles of usually white, pink or red flowers. City News Service, Daily News, 26 May 2026 The annual celebration, which traces its roots back to the chiefly British Empire Day, observes the unity of the Commonwealth of Nations, an international association of 56 countries. Edward Segarra, USA Today, 11 Mar. 2026 See All Example Sentences for chiefly

Word History

First Known Use

Adverb

15th century, in the meaning defined at sense 1

Adjective

1870, in the meaning defined above

Time Traveler
The first known use of chiefly was in the 15th century

Cite this Entry

“Chiefly.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/chiefly. Accessed 17 Jun. 2026.

Kids Definition

chiefly

adverb
chief·​ly
ˈchē-flē
1
: above all
2
: for the most part

More from Merriam-Webster on chiefly

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster