infinite
Americanadjective
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immeasurably great.
an infinite capacity for forgiveness.
- Synonyms:
- tremendous, immense, enormous
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indefinitely or exceedingly great.
infinite sums of money.
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unlimited or unmeasurable in extent of space, duration of time, etc..
the infinite nature of outer space.
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unbounded or unlimited; boundless; endless.
God's infinite mercy.
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Mathematics.
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not finite.
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(of a set) having elements that can be put into one-to-one correspondence with a subset that is not the given set.
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noun
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something that is infinite.
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Mathematics. an infinite quantity or magnitude.
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the boundless regions of space.
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the Infinite (Being), God.
adjective
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having no limits or boundaries in time, space, extent, or magnitude
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( as noun; preceded by the )
the infinite
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extremely or immeasurably great or numerous
infinite wealth
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all-embracing, absolute, or total
God's infinite wisdom
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maths
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having an unlimited number of digits, factors, terms, members, etc
an infinite series
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(of a set) able to be put in a one-to-one correspondence with part of itself
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(of an integral) having infinity as one or both limits of integration Compare finite
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Relating to a set that can be put into a one-to-one correspondence with some proper subset of its own members.
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Relating to or being a numerical quantity describing the size of such a set.
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Being without an upper or lower numerical bound.
Other Word Forms
Etymology
Origin of infinite
First recorded in 1350–1400; Middle English, from Latin infīnītus “boundless, endless”; equivalent to in- 3 + finite
Explanation
Infinite describes things that are endless, like the universe, or your uncle's corny jokes. Finite means "relating to something with an end," and when you add the prefix in-, meaning "not," you get infinite: having to do with something that never, ever ends. If someone has read every single book about pyramids, you might say he has an infinite knowledge of ancient Egyptian culture, even though that's an exaggeration. Surely he'll stop talking about them at some point...right?
Vocabulary lists containing infinite
Pi Day Vocabulary
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"The Great Gatsby," Chapter 1 Vocabulary
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The Balcony Scene from "Romeo and Juliet"
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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.
The exoskeleton made me feel like I had infinite endurance so I kept going, and my other muscles paid the price.
From The Wall Street Journal • May 21, 2026
“Fifty years from now, people are going to be amazed that we burned these rare, useful hydrocarbons for fuel, when the sun was just sitting up there providing an essentially infinite source of energy.”
From Los Angeles Times • May 14, 2026
It comes as platforms face calls to disable features like auto-play and infinite scroll, over concerns they keep users unhealthily hooked on endless streams of content.
From BBC • May 12, 2026
Even if your greek yogurt is on its last legs, I have found what seems like infinite uses for the tart, creamy product: breakfast, sauces, something vaguely adjacent to dessert.
From Salon • Apr. 28, 2026
“This fraction of which the denominator is a cipher, is termed an infinite quantity,” writes Bhaskara, a twelfth-century Indian mathematician, who tells of what happens when you add a number to 1 + 0.
From "Zero: The Biography of a Dangerous Idea" by Charles Seife
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
