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.

The Commodity Futures Trading Commission recently approved Kalshi’s plan to list perpetual futures contracts, known as “perps,” a trendy flavor of derivative that never expires and trades 24/7.

From The Wall Street Journal • Jun. 18, 2026

The suit argues that Kalshi is explicitly targeting CME’s retail customer base by marketing perpetual futures as a simpler alternative to CME’s crypto futures.

From The Wall Street Journal • Jun. 18, 2026

They described the feeling as standing under a waterfall of perpetual bad news.

From Science Daily • Jun. 16, 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

His intellect was a sparse acreage indeed but Pinkie got along by wearing a perpetual smile on his face and having an uncanny knack for repairing the engines of his teachers’ automobiles.

From "The Great Santini" by Pat Conroy

Vocabulary lists containing perpetual

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