Find Synonyms

eternity Synonyms

Another word for eternity

Choosing another word for eternity depends on context, so the 14 synonyms and similar words below are separated across 3 exact definitions and ranked by match strength.
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• noun (Context 1)

Infinite or unending time; the state of existing outside of or beyond the limits of time.

Usage Example

"Philosophers and physicists have long debated the nature of time and the concept of infinity."

Strongest
infinity
perpetuity
Strong
forever
endlessness
everlastingness
timelessness
immortality

• noun (Context 2)

A period of time that seems endless, especially because of boredom, anxiety, or anticipation.

Usage Example

"We waited for what felt like an eon before the test results finally arrived."

Strong
eon
age
forever
lifetime

• noun (Context 3)

A state of existence to which time has no application; the timeless realm or afterlife following death.

Usage Example

"Many religious traditions teach that the human soul passes into afterlife after physical death."

Strongest
afterlife
hereafter
Strong
eternal life
immortality
next world

Opposites of eternity

The opposite of eternity shifts depending on context. Common opposites include:

instant
transience
moment
impermanence
split second
second
ephemerality
mortality
See all opposites of eternity

• Nearby Words

eternalize
eternally
eternalness
eternity
etf
ethanol
ether

Cite this Entry

Wordmom. (2026). Synonyms for Eternity. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/eternity
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