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Definitions

in perpetuity

ADVERB
ad infinitum
Synonyms
WEAK
at length continuously endlessly forever having no end interminably never-ending on and on perpetually relentlessly unlimitedly without end without limit
ADVERB
forever
Synonyms
STRONGEST
always endlessly eternally permanently
STRONG
evermore perpetually
WEAK
durably enduringly everything considered for always for ever and ever for good for keeps for life forevermore immortally in perpetuum infinitely interminably lastingly now and forever on and on till Doomsday till blue in the face till death do us part till the cows come home till the end of time unchangingly world without end
Antonyms
WEAK
briefly never temporarily

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.

Huyghe’s ecosystems are difficult for museums and collectors to display in perpetuity, making “A::Light” a rare exception because it will be free to see and perpetually on view.

From The Wall Street Journal • Jan. 28, 2026

“If we say it’s in perpetuity, it’s a little bit harder to stomach,” he said.

From The Wall Street Journal • Oct. 10, 2025

Label boss Scott Borchetta gave the unproven singer a big cash advance in exchange for having ownership of the master recordings to her first six albums "in perpetuity".

From BBC • May 30, 2025

"I think it is a mistake to assume that we will have high tariffs in perpetuity," said Sen. Ted Cruz, R-Tex.

From Salon • Apr. 10, 2025

From the moment I achieved consciousness, I vowed to separate myself from the Scythedom in perpetuity.

From "Scythe" by Neal Shusterman