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.

Nasdaq is watching the development around perpetual futures and waiting for more clarity before taking any action, according to a person familiar with the matter.

From The Wall Street Journal • Jun. 23, 2026

And because perpetual futures allow leverage, skeptics warn they can fuel a downward spiral during periods of market stress.

From The Wall Street Journal • Jun. 23, 2026

Kalshi has said that the maximum leverage it allows on perpetual futures is around six times, and that perpetual futures aren’t any riskier than traditional futures offered by CME and other exchanges.

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

Francie had a perpetual angry welt on her back.

From "A Tree Grows in Brooklyn" by Betty Smith

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