English Reference

Word

infinite

Phoneticsin·fi·nite, stress on the first syllable

US/ˈɪnfənət/

UK/ˈɪnfɪnət/

Definitions

01without limits

B2 · Upper Intermediate

adj. having no end or limit in space, time, or size.

adj. limitless or boundless in space, extent, or size; impossible to measure or calculate.

“The night sky looked like an infinite sea of stars stretching forever.”

“Philosophers have long debated whether the universe is truly infinite or merely so vast that it exceeds human comprehension.”

Antonyms

02mathematical quantity

C1 · Advanced Mathematics Technical

adj. greater than any number you can think of.

adj. greater than any assignable quantity or countable magnitude.

“There is an infinite number of points on any straight line.”

“The set of all integers is infinite, yet it is considered a smaller infinity than the set of all real numbers.”

Synonyms

transfinite

Antonyms

03very great or intense

B2 · Upper Intermediate

adj. extremely large or great in amount or degree.

adj. used for emphasis to describe a quality that is extremely great or seemingly inexhaustible.

“The teacher showed infinite patience while explaining the difficult rule again.”

“The project required infinite attention to detail, as even a minor calculation error could compromise the structural integrity of the bridge.”

Antonyms

04grammar

C2 · Proficiency Science Technical

adj. describing a verb form that does not show a specific person or time.

adj. referring to verb forms, such as infinitives or participles, that are not limited by person, number, or tense.

“In the sentence 'I want to go', 'to go' is an infinite verb form.”

“The distinction between finite and infinite verb phrases is fundamental to understanding clausal subordination in English syntax.”

Synonyms

non-finite

Antonyms

05the concept of no end

C1 · Advanced Uncountable noun Literary

n. space or time that has no boundaries.

n. that which is infinite; an abstract space, time, or quantity without end.

“The explorers stared out into the infinite of the deep ocean.”

“The poet attempted to capture the sublime feeling of standing before the infinite, where the horizon offers no visual resolution.”

Synonyms

Collocations

Common phrases and expressions where native English speakers use the word “infinite” in context.

Adjective

01. infinite number

“There is an infinite number of stars in the universe, stretching far beyond what we can see.”

adj + noun

02. infinite scroll

Real-World Examples

“The Backrooms are an internet-created fictional setting imagined as an infinite network of empty, fluorescent-lit rooms.”
ScienceDaily 26 Jul 2026
“Even in an era of infinite viewing choices, the daytime soap retains a powerful appeal.”
Smithsonian Magazine 16 Jun 2026

Etymology

From Middle English infinite, from Old French infinit and its etymon Latin īnfīnītus, from in- (“not”) + fīnis (“end”) + the perfect passive participle ending -ītus. By surface analysis, in- + finite. Doublet of infinito. Displaced native Old English unġeendodlīċ.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

ADJECTIVE

infinite(B2)

Related words

Domains

GrammarMathematicsMusic

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Common
Level
B2 · Upper Intermediate
Updated

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