aeternus

Latin

Etymology

(deprecated template usage)

For older aeviternus, from aevum, from Proto-Indo-European *h₂eyu- (“vital energy”). Equivalent to aetās +‎ -rnus.

Pronunciation

• (Classical Latin) IPA^(key): /ae̯ˈter.nus/, [äe̯ˈt̪ɛrnʊs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /eˈter.nus/, [eˈt̪ɛrnus]

Adjective

aeternus (feminine aeterna, neuter aeternum, adverb aeternō); first/second-declension adjective

1. permanent, lasting, perpetual
2. eternal, endless
3. immortal

Declension

First/second-declension adjective.

Number	Singular				Plural
Case / Gender	Masculine	Feminine	Neuter		Masculine	Feminine	Neuter
Nominative	aeternus	aeterna	aeternum		aeternī	aeternae	aeterna
Genitive	aeternī	aeternae	aeternī		aeternōrum	aeternārum	aeternōrum
Dative	aeternō		aeternō		aeternīs
Accusative	aeternum	aeternam	aeternum		aeternōs	aeternās	aeterna
Ablative	aeternō	aeternā	aeternō		aeternīs
Vocative	aeterne	aeterna	aeternum		aeternī	aeternae	aeterna

Derived terms

• ab aeternō
• aeternālis
• aeternitās
• aeternō

Related terms

• aetās

Descendants

• Catalan: etern
• English: eterne
• Esperanto: eterna

• Ido: eterna
• Italian: eterno

• Portuguese: eterno
• Spanish: eterno

Further reading

• “aeternus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• “aeternus”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• aeternus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.