Synonyms of eternity

eternity

noun

i-ˈtər-nə-tē 

1

as in perpetuity

endless time

the question whether the universe will end someday or continue to exist in eternity

Synonyms & Similar Words

• perpetuity
• infinity
• foreverness
• everlasting
• permanence
• permanency
• timelessness
• endlessness
• boundlessness
• limitlessness
• interminableness

Antonyms & Near Antonyms

• impermanence
• transience
• transitoriness
• ephemerality
• temporariness

2

as in immortality

unending existence after death

a firm belief in the eternity of the soul

Synonyms & Similar Words

• immortality
• afterlife
• hereafter
• beyond
• afterworld
• otherworld

3

as in forever

a long or seemingly long period of time

we waited in line for tickets for an eternity

Synonyms & Similar Words

• forever
• months
• long
• age
• moon
• eon
• blue moon
• cycle
• infinity
• donkey's years
• coon's age
• lifetime

Antonyms & Near Antonyms

• moment
• instant
• minute
• second
• flash
• twinkle
• split second
• wink
• shake
• twinkling
• trice
• jiffy
• nanosecond
• microsecond

Example Sentences

Recent Examples of eternity

For the traditional Telugu Hindu ceremony, their priest translated Sanskrit to English in real time, and the mandap was designed as a circle to represent how life flows into itself for eternity. — Nicole Kliest, Vogue, 29 Aug. 2026

The temple is a coveted site for wedding ceremonies, known as celestial marriages, or sealings, in which couples are bound together for all eternity. — Brandon Griggs, CNN Money, 28 Aug. 2026

The singer roamed the space, which created an eternity out of glass, and captured the experience on camera. — Larisha Paul, Rolling Stone, 27 Aug. 2026

However, two and a half months is almost an eternity in Israel; much can happen before the end of October. — David Shulman, The New York Review of Books, 26 Aug. 2026