What does "sempiternally" mean?

In a sempiternal manner; eternally.

What is a synonym for "sempiternally"?

Common synonyms include: forever.

adv

adv ·Rare ·Advanced level

Adverb

1
In a sempiternal manner; eternally. not-comparable
"Meanwhile, Cripps and Limpet sat in the little sempiternally gas-lit wine-shop, and held an important conversation."
2
in an everlasting manner, as to have an infinite temporal duration; as opposed to eternally or timelessly, as to exist outside time not-comparable

"Meanwhile, Cripps and Limpet sat in the little sempiternally gas-lit wine-shop, and held an important conversation."

From sempiternal + -ly.