sempiternal (not comparable)
- Everlasting, eternal.
- 1841, R[alph] W[aldo] Emerson, “Essay X. Circles.”, in Essays, Boston, Mass.: James Munroe and Company, OCLC 3778020 ↗, page 265 ↗:
- 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 to do something without knowing how or why; in short, to draw a new circle. Nothing great was ever achieved without enthusiasm.
- (philosophy) Everlasting, that is, having infinite temporal duration (as opposed to eternal: outside time and thus lacking temporal duration altogether).