in·​fi·​nite | \ˈin-fə-nət \

Definition of infinite 

(Entry 1 of 2)

1 : extending indefinitely : endless infinite space

2 : immeasurably or inconceivably great or extensive : inexhaustible infinite patience

3 : subject to no limitation or external determination

4a : extending beyond, lying beyond, or being greater than any preassigned finite value however large infinite number of positive numbers

b : extending to infinity infinite plane surface

c : characterized by an infinite number of elements or terms an infinite set an infinite series



Definition of infinite (Entry 2 of 2)

: something that is infinite (as in extent, duration, or number)

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Other Words from infinite


infinitely adverb
infiniteness noun

Examples of infinite in a Sentence


an infinite series of numbers She has infinite patience when she's dealing with children. There seemed to be an infinite number of possibilities. an infinite variety of choices
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Recent Examples on the Web: Adjective

The list of problems that ought to have been addressed before ensuring job security for an incumbent politician contemplating higher office is almost infinite. James Freeman, WSJ, "Serving Spartacus," 24 Oct. 2018 Differences in temperature and humidity can give rise to an infinite number of snowflake shapes. Discover Magazine, "The Great Snow of Beaver Creek," 3 Oct. 2018 To an industrial designer, the universe of possible kitchen tools is infinite. New York Times, "All Those Kitchen Gadgets, but a Sharp Knife Just Might Do," 8 May 2018 One of the most amusing parts of Twitter is the daily, seemingly infinite hashtag games that take place on the social media platform. Raisa Bruner, Time, "J.K. Rowling and Blondie Cleared Up a Misunderstanding Via Tweets," 10 Jan. 2018 Nonetheless, Facebook customers are plentiful, and the ways to segment them are virtually infinite. Daniel Gallant, WSJ, "How to Beat the Zuckerberg Casino," 8 July 2018 There are infinite ways to get people riled up on the internet, but one surefire tactic is to sell a weird thing for a ludicrous amount of money. Cam Wolf, GQ, "Balenciaga Is in the Business of Making Memes," 31 May 2018 The story, about an infinite library, might be seen as finding an echo in Mr. Corrêa do Lago’s own project. Jennifer Schuessler, New York Times, "Not Your Average Autograph Collection," 12 July 2018 His knees were inflamed from infinite home plate collisions. Jon Wertheim,, "Johnny Bench Is Already a Hall-of-Famer, But He's Looking For a New Distinction," 5 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'infinite.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of infinite


14th century, in the meaning defined at sense 1


15th century, in the meaning defined above

History and Etymology for infinite


Middle English infynyt, borrowed from Anglo-French & Latin; Anglo-French infinit, borrowed from Latin infīnītus "indefinite, having no limit, endless," from in- in- entry 1 + fīnītus "specific, definite, having bounds or limits" — more at finite

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Statistics for infinite

Last Updated

13 Nov 2018

Look-up Popularity

Time Traveler for infinite

The first known use of infinite was in the 14th century

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English Language Learners Definition of infinite

: having no limits

: extremely large or great


in·​fi·​nite | \ˈin-fə-nət \

Kids Definition of infinite

1 : having no limits of any kind the infinite universe

2 : seeming to be without limits She took infinite care when handling chemicals.

Other Words from infinite

infinitely adverb He is infinitely patient.

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More from Merriam-Webster on infinite

Thesaurus: All synonyms and antonyms for infinite

Spanish Central: Translation of infinite

Nglish: Translation of infinite for Spanish Speakers

Britannica English: Translation of infinite for Arabic Speakers

Comments on infinite

What made you want to look up infinite? Please tell us where you read or heard it (including the quote, if possible).


playful or foolish behavior

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