Definition of sempiternal in English:

sempiternal

adjective

  • Eternal and unchanging; everlasting.

    ‘his writings have the sempiternal youth of poetry’
    • ‘There is throughout more than a hint of the Joycean conceit that this process is giratory and sempiternal, even though its temporal vector may be historically irreversible.’
    • ‘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 do something without knowing how or why, in short to draw a new circle.’
    • ‘In another sense, it means that God is sempiternal, namely, a being existing throughout time but whose duration is successive and for whom there is a before and an after.’
    • ‘He knew they constituted the unbreakable and sempiternal circle.’
    • ‘I get the Bishop Berkeley idea that things only exist when God thinks about them; that God is not sempiternal but only exists when some people think about him is bizarre.’
    enduring, long-lasting, long-lived, lifelong, abiding, continuing, remaining, long-term, surviving, persisting, permanent, deep-rooted, indelible, ingrained
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Origin

Late Middle English: from Old French sempiternel or late Latin sempiternalis, from Latin sempiternus, from semper always + aeternus eternal.

Pronunciation:

sempiternal

/ˌsempəˈtərnl/