instrumental

adjective

in·​stru·​men·​tal ˌin(t)-strə-ˈmen-tᵊl How to pronounce instrumental (audio)
1
a
: serving as a crucial means, agent, or tool
was instrumental in organizing the strike
b
: of, relating to, or done with an instrument or tool
2
: relating to, composed for, or performed on a musical instrument
3
: of, relating to, or being a grammatical case or form expressing means or agency
4
: of or relating to instrumentalism
5
: operant sense 3
instrumental learning
instrumental conditioning
instrumental noun
instrumentally adverb

Did you know?

An instrument is a tool, something used to construct. It's often a tool for making music. A musical saw happens to be a carpenter's tool that can be played with a violin bow (though you probably wouldn't want to play a wrench or a pair of pliers). The musical meanings of instrumental, as in "It starts with an instrumental piece" or "a jazz instrumental", are common. But the meanings "helpful", "useful", and "essential", as in "He was instrumental in getting my book published", are just as common.

Examples of instrumental in a Sentence

They played instrumental music at the wedding. an instrumental version of a song
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.
The Chicago Cubs' 2014 first-round draft pick, fourth overall, ended up in Boston at the 2021 trade deadline and was instrumental in getting the Red Sox to the playoffs that year. Jon Vankin, MSNBC Newsweek, 5 Nov. 2025 The film explores the unlikely and tender relationship between Naz and Ingle, and the instrumental role that Ingle played on Naz’s road to success. Melanie Goodfellow, Deadline, 4 Nov. 2025 At the groundbreaking, Allen Kashani, senior project manager at Tri Pointe Homes, thanked the partners who have been instrumental in the project, consultants like Schmidt Design Group and Leppert Engineering, who have been with them since the community’s first home was built in 2002. Karen Billing, San Diego Union-Tribune, 4 Nov. 2025 Boyu promises to be instrumental in helping Starbucks open stores in cities beyond Shanghai, Beijing, and China’s other megalopolises, while keeping costs in check. Phil Wahba, Fortune, 4 Nov. 2025 See All Example Sentences for instrumental

Word History

First Known Use

1616, in the meaning defined at sense 1a

Time Traveler
The first known use of instrumental was in 1616

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Cite this Entry

“Instrumental.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/instrumental. Accessed 8 Nov. 2025.

Kids Definition

instrumental

adjective
in·​stru·​men·​tal ˌin(t)-strə-ˈment-ᵊl How to pronounce instrumental (audio)
1
a
: acting as an instrument or means
was instrumental in organizing the club
b
: of, relating to, or done with an instrument
instrumental error
2
: relating to, composed for, or performed on a musical instrument
an unusual instrumental arrangement
instrumentally adverb

Medical Definition

instrumental

adjective
in·​stru·​men·​tal ˌin(t)-strə-ˈment-ᵊl How to pronounce instrumental (audio)
: operant
instrumental learning
instrumental conditioning

More from Merriam-Webster on instrumental

Last Updated: - Updated example sentences
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