indispensable

adjective

in·​dis·​pens·​able ˌin-di-ˈspen(t)-sə-bəl 

1

: absolutely necessary : essential

an indispensable member of the staff

is indispensable to the team

2

: not subject to being set aside or neglected

an indispensable obligation

indispensability

ˌin-di-ˌspen(t)-sə-ˈbi-lə-tē 

noun

indispensable noun

indispensableness

ˌin-di-ˈspen(t)-sə-bəl-nəs 

noun

indispensably

ˌin-di-ˈspen(t)-sə-blē 

adverb

Synonyms of indispensable

• essential
• necessary
• integral
• required
• needed
• needful
• vital

Examples of indispensable in a Sentence

fully aware that he was an indispensable assistant, he decided that it was high time that he be paid what he was worth

Recent Examples on the Web

Misato Morita is also back as Kaori Makimura, Ryo’s indispensable partner, while Fumino Kimura returns as the quick-witted detective Saeko Nogami. —Patrick Brzeski, HollywoodReporter, 25 Mar. 2026

Russia will aim “to position itself as an indispensable supplier that saved the world from starvationâ€� through its fertilizer exports, a Carnegie fellow argued. —J.d. Capelouto, semafor.com, 25 Mar. 2026

And all this, not because passion is vice and moderation virtue, but because moderation is indispensable if passionate men are to escape being locked in an encounter of mutual frustration. —Peter Wehner, The Atlantic, 23 Mar. 2026

Fluorite, or fluorspar, plays a critical role in semiconductor manufacturing and lithium-ion battery production, while baryte is indispensable in oil and gas drilling, where it is used to stabilise wells and prevent blowouts. —Bojan Stojkovski, Interesting Engineering, 21 Mar. 2026

Word History

First Known Use

1653, in the meaning defined at sense 2

Rhymes for indispensable

• compensable
• condensable
• defensible
• dispensable
• extensible
• insensible
• ostensible
• comprehensible
• indefensible
• reprehensible
• supersensible
• incomprehensible

Kids Definition

indispensable

adjective

in·​dis·​pens·​able ˌin-dis-ˈpen(t)-sə-bəl 

: absolutely necessary : essential

an indispensable employee

indispensability

-ˌpen(t)-sə-ˈbil-ət-ē 

noun

Legal Definition

indispensable

adjective

in·​dis·​pen·​sa·​ble ˌin-di-ˈspen-sə-bəl 

: having rights so connected to the claims of the parties to an action that the action cannot be adjudicated without affecting those rights see also indispensable party at party