perpetual - definition and synonyms

adjective 

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/pə(r)ˈpetʃuəl/
  1. 1
    happening so often that you become annoyed as a result

    He soon grew tired of her perpetual demands for money.

  2. 2
    literary continuing all the time

    Many people live in perpetual fear of losing their jobs.

    A perpetual mist hung over the valley.

derived word