Sempiternal

//ˌsɛm.pɪˈtɜː.nəl// adj

adj ·Uncommon ·Advanced level

Definitions

Adjective
  1. 1
    Everlasting, eternal. not-comparable

    "The one thing which we seek with insatiable desire is to forget ourselves, to be surprised out of our propriety, to lose our sempiternal memory, and to do something without knowing how or why; in short, to draw a new circle. Nothing great was ever achieved without enthusiasm."

  2. 2
    Having infinite temporal duration, rather than outside time and thus lacking temporal duration altogether; everlasting. not-comparable
Adjective
  1. 1
    having no known beginning and presumably no end wordnet

Synonyms

All synonyms
everlastingagelessceaselesscoeternalconstantcontinual

Example

More examples

"The one thing which we seek with insatiable desire is to forget ourselves, to be surprised out of our propriety, to lose our sempiternal memory, and to do something without knowing how or why; in short, to draw a new circle. Nothing great was ever achieved without enthusiasm."

Etymology

From Old French sempiternel, from Medieval Latin sempiternālis, from Latin sempiternus, a contraction of semperæternus, from semper (“always”) + æternus (“eternal”).

More for "sempiternal"

SynonymsSentencesPronunciationTranslate

Next best steps

Find stronger synonymsSee usage examplesCheck pronunciationBrowse writing guides

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.