/ ɪˈtɜːnl; NAmE ɪˈtɜːrnl/ adjective
1.
without an end; existing or continuing forever :
the promise of eternal life in heaven
She's an eternal optimist (= she always expects that the best will happen) .
eternal truths (= ideas that are always true and never change)
2.
[ only before noun ] ( disapproving ) happening often and seeming never to stop
SYN constant :
I'm tired of your eternal arguments.
► eter·nal·ly / ɪˈtɜːnəli; NAmE -ˈtɜːrn-/ adverb :
I'll be eternally grateful to you for this.
women trying to look eternally young
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IDIOMS
see hope noun
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WORD ORIGIN
late Middle English : via Old French from late Latin aeternalis , from Latin aeternus , from aevum age.