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[uhn-pluhmd] /ʌnˈplʌmd/
not plumbed; not tested or measured with a plumb line.
not understood or explored in depth, as an idea, theory, feeling, or experience.
Origin of unplumbed
1615-25; un-1 + plumb + -ed3 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for unplumbed
Historical Examples
  • You said the other day that you believed Mrs. Balfame to have unplumbed depths, or something equally popular with your sex.

    Mrs. Balfame Gertrude Franklin Horn Atherton
  • Down, down, to what unplumbed depths had it gone, those other times?

    The Fate of Felix Brand Florence Finch Kelly
  • She could only look at it with that ache of divine discontent: unplumbed, wordless longing.

    The Rhodesian Gertrude Page
  • One drop of the salt estranging sea is as unplumbed as the whole ocean.

    Robert Browning Edward Dowden
  • Men knew not even whether it were round or flat; and the unplumbed sea could still estrange.

    The Age of Erasmus P. S. Allen
  • Helen grew conscious of unplumbed depths, of instincts at which she was amazed and ashamed.

  • The water wells up incredibly fast and quiet, and surely incredibly cold, from some unplumbed, invisible source below.

  • His hackles rose as he thought of a senseless plunge into unplumbed distance.

    Comet's Burial Raymond Zinke Gallun
  • It was as if idly treading a flower-strewn path she had without warning come upon the unplumbed depths of a volcano's crater.

    Shifting Sands Sara Ware Bassett
  • Without transition, such persons have passed from the absurd excesses of slothful optimism to the vertigo of unplumbed pessimism.

    The Forerunners Romain Rolland
British Dictionary definitions for unplumbed


unfathomed; unsounded
not understood in depth
(of a building) having no plumbing
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
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