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.

Here, perpetual motion tips over into physical comedy.

From Los Angeles Times • Jun. 11, 2026

In early trading on Thursday, SpaceX stock was trading at $164 on Hyperliquid, a cryptocurrency platform for trading perpetual futures—or futures that never expire.

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

Other commentators liken the prison label to “the mark of Cain” and characterize the perpetual nature of the sanction as “internal exile.”

From "The New Jim Crow" by Michelle Alexander

Vocabulary lists containing perpetual

The Vocabulary.com Top 1000

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Essential Academic Vocabulary for High School Students, List 2

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

Do-Over: Words For Groundhog Day

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!