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Synonyms

indispensable

American  
[in-di-spen-suh-buhl] / ˌɪn dɪˈspɛn sə bəl /

adjective

  1. absolutely necessary, essential, or requisite.

    an indispensable member of the staff.

    Synonyms:
    needed
  2. incapable of being disregarded or neglected.

    an indispensable obligation.


noun

  1. a person or thing that is indispensable.

indispensable British  
/ ˌɪndɪˈspɛnsəbəl /

adjective

  1. absolutely necessary; essential

  2. not to be disregarded or escaped

    an indispensable role

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

noun

  1. an indispensable person or thing

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Related Words

See necessary.

Other Word Forms

  • indispensability noun
  • indispensableness noun
  • indispensably adverb

Etymology

Origin of indispensable

First recorded in 1525–35; from Medieval Latin indispēnsābilis “not subject to dispensation.” See in- 3, dispensable

Explanation

Indispensable is a strong adjective for something that you couldn't do without. If you have asthma and you're packing for summer vacation, your inhaler is indispensable, unless you enjoy gasping on the beach. Something that is dispensable is something you could get rid of, like that box of yogurt-covered zucchini snacks that's been in the pantry for a year. So if something is indispensable you couldn't possibly go without it, like salt, or for some people, coffee. Chocolate is indispensable for chocolate chip cookies, as is furniture for the adult hide-and-go-seek league.

Keep Reading on Vocabulary.com

Vocabulary lists containing indispensable

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.

Japan is spending billions of dollars to diversify its supplies of energy and critical minerals and support industries that are indispensable to the modern economy, including key parts of the semiconductor supply chain.

From The Wall Street Journal • Apr. 10, 2026

The cupboard is bare, underscoring just how indispensable Kane is.

From BBC • Mar. 31, 2026

Jane Harman, the decision allowed Davis to remain competitive and eventually pay for the statewide ad blitz that is indispensable in California.

From Los Angeles Times • Mar. 25, 2026

“While GPUs handle the heavy mathematical lifting for AI, modern high-core-count CPUs are becoming indispensable for orchestration, data-management, and real-time inference tasks that GPUs cannot perform efficiently,” Lee wrote.

From MarketWatch • Mar. 20, 2026

There is a miserable shortness to our supplies of that indispensable element.

From "The Astonishing Life of Octavian Nothing, Traitor to the Nation, Volume II: The Kingdom on the Waves" by M.T. Anderson