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See more synonyms for unplumbed on Thesaurus.com
  1. not plumbed; not tested or measured with a plumb line.
  2. not understood or explored in depth, as an idea, theory, feeling, or experience.
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Origin of unplumbed

First recorded in 1615–25; un-1 + plumb + -ed3
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words


Examples from the Web for unplumbed

Historical Examples

  • His silences had not proceeded from the unplumbed depths of his knowledge.


    Edna Ferber

  • Down, down, to what unplumbed depths had it gone, those other times?

    The Fate of Felix Brand

    Florence Finch Kelly

  • It cried to him out, as it seemed, of some unplumbed depth of experience in himself.

  • One drop of the salt estranging sea is as unplumbed as the whole ocean.

    Robert Browning

    Edward Dowden

  • Helen grew conscious of unplumbed depths, of instincts at which she was amazed and ashamed.

British Dictionary definitions for unplumbed


  1. unfathomed; unsounded
  2. not understood in depth
  3. (of a building) having no plumbing
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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