Synonyms of infinity

infinity

noun

in-ˈfi-nə-tē 

as in perpetuity

endless time

it seemed as though that meeting might extend into infinity

Synonyms & Similar Words

• perpetuity
• eternity
• foreverness
• everlasting
• endlessness
• permanence
• boundlessness
• limitlessness
• timelessness
• permanency
• interminableness

Antonyms & Near Antonyms

• impermanence
• transience
• transitoriness
• ephemerality
• temporariness

Example Sentences

Recent Examples of infinity

Outdoors, the setting comes with an infinity-edge pool, a swim-up bar, covered terraces and multiple entertaining areas designed to take advantage of the lake-and-golf-course backdrop. — David Caraccio updated July 31, Sacbee.com, 31 July 2026

Instead, the adults-only retreat is built around infinity hot tubs, a bar, and rows of plush daybeds and cabanas. — Belinda Luksic, Southern Living, 31 July 2026

That gets into the very annoying realization that some infinities are bigger than other infinities, which is mathematically true and conceptually uncomfortable. — Michael Schneider, Variety, 24 July 2026

Bestselling author Chanel Cleeton delivers a moving tale of dedication, sacrifice, and, yes, the possibilities of infinity. — Monitor Reviewers, Christian Science Monitor, 23 July 2026