eonian

E1O1N1I1A1N1
US/iˈoʊniən/UK/iːˈəʊnɪən/

adjective

Of or pertaining to an eon

Similar
aeonianagelesseternaleverlastingperpetualunendingunceasingpermanent
OriginAncient Greek αἰώνιος →
Scrabble 6
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

adjectiveeonian (comparative more eonian, superlative most eonian)

comparative more eonian · superlative most eonian · alternative Commonwealth aeonian · alternative dated æonian · alternative aionian

  1. Of or pertaining to an eon
  2. broadlyeon-long, everlasting

    But I should turn mine ears and hear The moanings of the homeless sea, ⁠The sound of streams that swift or slow ⁠Draw down Æonian hills, and sow The dust of continents to be; […]

    1850, [Alfred, Lord Tennyson], “Canto XXXV”, in In Memoriam, London: Edward Moxon, […], →OCLC, page 54

Synonyms & antonyms

adjectiveof or relating to a geological eon (longer than an era)

Similar
aeonian

adjectivecontinuing forever or indefinitely

Similar
agelessaeonianeternaleverlastingperpetualunendingunceasingpermanentlasting
Also see
agelesseonialeternaleverlastinglastingpermanentperpetualunceasingunending

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Ancient Greekαἰώνιος“lasting for an age; perpetual; eternal”
  2. Englisheonian

From Ancient Greek αἰώνιος (aiṓnios, “lasting for an age; perpetual; eternal”) + -an, the former from αἰών (aiṓn, “lifetime; aeon; age; generation”) (whence also eon, aeon) + -ιος (-ios, adjective suffix).

More words from Ancient Greek

Full word history & related roots →
Cite this entry
APA

eonian. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/eonian

MLA

“eonian.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/eonian. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “eonian,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/eonian.

Source: eonian on Wiktionary, CC BY-SA 4.0.