Eternity
Eternity noun - Endless time.
Usage example: the question whether the universe will end someday or continue to exist in eternity
Infinity is a synonym for eternity in limited topic. In some cases you can use "Infinity" instead a noun "Eternity", when it comes to topics like perpetuity, forever, endless time. popular alternative
Infinity
Infinity noun - Endless time.
Usage example: it seemed as though that meeting might extend into infinity
Eternity is a synonym for infinity in limited topic. You can use "Eternity" instead a noun "Infinity", if it concerns topics such as endless time, endlessness. popular alternative
Nearby Words: infinite, infinitely
Mutual synonyms
Related pairs
How words are described
Both words in one sentence
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In one part, he describes big numbers and then points out how far from infinity and eternity they are.
- Infinity and eternity will make your head hurt.
Source: Mind Screw / Other - At long last I am free of eternity...of infinity...free of the cruel, unending Ring!
Cite this Source
Infinity and Eternity. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/eternity/infinity
Eternity & Infinity. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/eternity/infinity>.
Infinity or Eternity. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/eternity/infinity.
Google Ngram Viewer shows how "eternity" and "infinity" have occurred on timeline