from The American Heritage® Dictionary of the English Language, 4th Edition

  • adj. Lasting for eternity.
  • adj. Continuing or lasting for an indefinitely long time.
  • adj. Instituted to be in effect or have tenure for an unlimited duration: a treaty of perpetual friendship.
  • adj. Continuing without interruption. See Synonyms at continual.
  • adj. Flowering throughout the growing season.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Lasting forever, or for an indefinitely long time
  • adj. Set up to be in effect or have tenure for an unlimited duration
  • adj. Continuing uninterrupted
  • adj. Flowering throughout the growing season

from the GNU version of the Collaborative International Dictionary of English

  • adj. Neverceasing; continuing forever or for an unlimited time; unfailing; everlasting; continuous.

from The Century Dictionary and Cyclopedia

  • Continuing for ever in future time; destined to continue or be continued through the ages; everlasting: as, a perpetual covenant; a perpetual statute.
  • Continuing or continued without intermission; uninterrupted; continuous; continual:
  • Synonyms Everlasting, Immortal, etc. (see eternal), unceasing, ceaseless, unfailing, perenuial, enduring, permanent, lasting, endless, everlasting.
  • 2. Continual, Incessant, etc. (see incessant), constant.
  • n. A perennial plant, especially a rose which blooms every month of the year.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adj. uninterrupted in time and indefinitely long continuing
  • adj. continuing forever or indefinitely


Middle English perpetuel, from Old French, from Latin perpetuālis, from perpetuus, continuous : per-, per- + petere, to go toward; see pet- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin perpetualis ("universal"). (Wiktionary)



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