Definition of "sempiternal" [sem•pi•ter•nal]

• Enduring forever; eternal. See Synonyms at infinite. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Although the colonists were expected to enjoy a sempiternal spring, the lack of seasons only reminded them that their world was artificial."
• "Meanwhile the Underground festers and dies at the weekend, as sempiternal and glacially-proceeding 'engineering works' bring it to its umpteenth year of standstill"
• "You can only be eaten by hungry sharks for so long; but Speaker Pelosi's sempiternal."