Definitions

perpetual

[per-pech-oo-uhl] / pərˈpɛtʃ u əl /

ADJECTIVE

continual, lasting

Synonyms

STRONGEST

ceaseless constant continued continuous endless enduring eternal incessant infinite interminable never-ending perennial permanent persistent recurring unceasing unending

WEAK

abiding everlasting going on immortal imperishable intermittent never-ceasing perdurable recurrent reoccurring repeated repeating repetitious returning sempiternal unchanging undying unfailing uninterrupted unremitting without end

Antonyms

STRONGEST

bounded ceasing changeable changing completed discontinuous ending ephemeral finished finite halting intermittent interrupted irregular limited stopping temporary terminable transient

WEAK

brief fleeting momentary

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.

SpaceX share futures are trading at $165 on Hyperliquid External link, an exchange for perpetual futures.

From Barron's • Jun. 11, 2026

As a result, one hemisphere constantly faces the star while the other remains in perpetual darkness.

From Science Daily • Jun. 11, 2026

Losing Catherine to Edgar, the heir of Thrushcross Grange, prompts Heathcliff, the perpetual outsider, to vow vengeance; he maneuvers to gain financial control of both houses with the aim of destroying each one’s inhabitants.

From The Wall Street Journal • Jun. 10, 2026

They gave the U.S. a perpetual concession for the cemetery where most of those fallen Americans are buried.

From Salon • Jun. 9, 2026

At the same time the sacrament of the Mass affirms ‘the perpetual contemporaneity of The Passion’ and celebrates the ‘marriage of time present with time past’.

From "The Invention of Science" by David Wootton

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