instrumental

American  

[in-struh-men-tl] / ˌɪn strəˈmɛn tl /

adjective

1. serving or acting as an instrument or means; useful; helpful.

   Synonyms:

   effective, effectual, implemental

2. performed on or written for a musical instrument or instruments.

   instrumental music.

3. of or relating to an instrument or tool.

4. Grammar.

   1. (in certain inflected languages, as Old English and Russian) noting or pertaining to a case having as its distinctive function the indication of means or agency, as Old English beseah blīthe andweitan “looked with a happy countenance.”

   2. noting the affix or other element characteristic of this case, or a word containing such an element.

   3. similar to such a case form in function or meaning, as the Latin instrumental ablative, gladiō, “by means of a sword.”

   4. (in case grammar) pertaining to the semantic role of a noun phrase that indicates the inanimate, nonvolitional, immediate cause of the action expressed by a verb, as the rock in The rock broke the window or in I broke the window with the rock.

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noun

• instrumentals
  plural

1. Grammar.

   1. the instrumental case.

   2. a word in the instrumental case.

   3. a construction of similar meaning.

2. a musical composition played by an instrument or a group of instruments.

instrumental British  

/ ˌɪnstrəˈmɛntəl /

adjective

1. serving as a means or influence; helpful

2. of, relating to, or characterized by an instrument or instruments

3. played by or composed for musical instruments

4. grammar denoting a case of nouns, etc, in certain inflected languages, indicating the instrument used in performing an action, usually translated into English using the prepositions with or by means of

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noun

1. a piece of music composed for instruments rather than for voices

2. grammar

   1. the instrumental case

   2. a word or speech element in the instrumental case

Other Word Forms

Derived Forms

• instrumentality
  noun
• noninstrumental
  adjective
• uninstrumental
  adjective
• instrumentally
  adverb
• noninstrumentally
  adverb
• uninstrumentally
  adverb

Inflected Forms

Nouns

• instrumentals
  plural

Etymology

Origin of instrumental

First recorded in 1350–1400; Middle English word from Medieval Latin word instrūmentālis. See instrument, -al ¹

Explanation

Instrumental music involves just instruments — no singing. But you could also say that the conductor is instrumental to — or a critical part of — an orchestra's success. If you enjoy the ballet, part of it may be the instrumental music that accompanies the graceful movements. An instrumental song is one without a singer, and there can be instrumental passages of any song, where the band just plays and the singer is quiet. But this word also means something like useful. You could say that Martin Luther King, Jr. was an instrumental part of the civil rights movement because he was such an important part of it.

Example Sentences

See Examples For:

instrumental instrumentals

Human rights lawyer Karen Todner was instrumental in securing Leroy's release as he was one of four prisoners she submitted an application for the writ of Habeas Corpus for.

From BBC ● Sep. 13, 2026

One challenge is that reliable instrumental climate records cover less than a century.

From Science Daily ● Sep. 13, 2026

Some of the ballads feel like instrumental renditions of soul classics.

From The Wall Street Journal ● Sep. 7, 2026

The French president has been instrumental over recent years in championing the daring gambit to loan the 950-year-old tapestry to the British Museum, which is putting it on display until next July.

From Barron's ● Sep. 2, 2026

It was in honor of the two men on the board of the Welberg Foundation who had been instrumental in getting her husband the grant.

From "Flowers for Algernon" by Daniel Keyes

While past records often featured such incense-perfumed instrumentals as connecting interludes, here the background has been moved to the front.

From The Wall Street Journal ● Sep. 1, 2026

The vocals throughout have that patented, tingling Jayhawks sound; the instrumentals are as sharp as fans will recall.

From The Wall Street Journal ● Aug. 24, 2026

And when Shults, who, along with directing the film, co-wrote and edited it, uses the superstar’s irresistible instrumentals in the movie, he marries his beautifully constructed images with sound to create some undeniably gripping sequences.

From Salon ● May 19, 2025

The album also features a pair of atmospheric instrumentals, “Space 1” and “Space 2,” co-written by the jammers.

From Los Angeles Times ● Apr. 9, 2025

Hence, then, in the and why we have instrumental ablatives, or, simply, instrumentals.

From A Handbook of the English Language by R. G. (Robert Gordon) Latham

Related Words

• involved