From Old French sempiternel, from Medieval Latin sempiternālis, from Latin sempiternus, a contraction of semperæternus, from semper (“always”) + æternus (“eternal”).
sempiternal (not comparable)
- Everlasting, eternal.
1841, Ralph Waldo Emerson, “Circles”, in Essays: First Series:
The one thing which we seek with insatiable desire is […] to lose our sempiternal memory and to do something without knowing how or why; in short to draw a new circle.
2008 August 2, Shivangi Singh, “A sneak-peek at ‘just friends’ of filmdom!”, in Zee News:
[I]n filmdom, the sempiternal question continues: Can a male and female actor be just ‘good friends’?
- (philosophy) Everlasting, that is, having infinite temporal duration (as opposed to eternal: outside time and thus lacking temporal duration altogether).
seemingly everlasting or eternal