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

The atrium features a showpiece sofa shaped like the infinity sign, plus playful brass and handspun wool chairs by Egg Designs, while the library room’s backlit shelves are stacked with Assouline coffee table books and various objets d’art. — Condé Nast, Condé Nast Traveler, 9 July 2026

But then what happens is that your model for shallow water waves goes off to plus or minus infinity, which obviously does not represent the real world. — Quanta Magazine, 25 June 2026

Helping children find that balance is a lesson that can truly take them to infinity and beyond. — Sandra Gonzalez, CNN Money, 19 June 2026

Maybe the Sparks can trade every first round pick for infinity and beyond and the two of them can be roommates! — Los Angeles Times, 13 June 2026