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.