[om-nish-uh nt]


having complete or unlimited knowledge, awareness, or understanding; perceiving all things.


an omniscient being.
the Omniscient, God.

Origin of omniscient

1595–1605; < New Latin omniscient-, stem of omnisciēns, equivalent to Latin omni- omni- + scient- knowing; see science
Related formsom·nis·cient·ly, adverbun·om·nis·cient, adjectiveun·om·nis·cient·ly, adverb
Can be confusedomnipotent omniscient Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for omniscient

almighty, infinite, knowledgeable, preeminent, wise

Examples from the Web for omniscient

Contemporary Examples of omniscient

Historical Examples of omniscient

  • Because He is omniscient, and we cannot hide anything from Him, not even our thoughts.

  • Hetty would have liked to be omniscient that she might procure for him all he could desire.

  • Does not your omniscient brother appear to you to have made a mistake?

  • That is the hobby of all diplomatists; they like people to believe that they are omniscient.

    The Memoires of Casanova, Complete

    Jacques Casanova de Seingalt

  • She did not even ask me what I meant; as if the greatness of her soul was omniscient.


    Joseph Conrad and F.M. Hueffer

British Dictionary definitions for omniscient



having infinite knowledge or understanding
having very great or seemingly unlimited knowledge
Derived Formsomniscience, nounomnisciently, adverb

Word Origin for omniscient

C17: from Medieval Latin omnisciens, from Latin omni- + scīre to know
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for omniscient

c.1600, from Modern Latin omniscientem (nominative omnisciens), back-formation from Medieval Latin omniscientia (see omniscience). Related: Omnisciently.

Online Etymology Dictionary, © 2010 Douglas Harper