eonian
Speech parts
1. eonian - Adjective
2. eonian - Adjective Satellite
Meaning
of or relating to a geological eon (longer than an era)
continuing forever or indefinitely
Source: WordNetSynonyms
eternal
perpetual
everlasting
ageless
unending
aeonian
unceasing
arrant
lasting
persistent
durable
endless
immortal
timeless
interminable
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Antonyms
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the ageless themes of love and revenge
eternal truths
life everlasting
hell's perpetual fires
the unending bliss of heaven