not ponderable; that cannot be precisely determined, measured, or evaluated.
an imponderable thing, force, agency, etc.
Origin of imponderable
Related formsim·pon·der·a·bil·i·ty, im·pon·der·a·ble·ness, nounim·pon·der·a·bly, adverb
From the Medieval Latin
dating back to 1785–95.
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for imponderableslight
Examples from the Web for imponderable
Historical Examples of imponderable
A hot body was one which had absorbed an imponderable substance.
Matter was for the moment as subtle, as imponderable as soul.
We have not the slightest reason to believe that Aether is imponderable.
At all events the onus of proof rests with those who assert it is imponderable.
Likeness, dear Baron, is often the result of imponderable things.
British Dictionary definitions for imponderable
unable to be weighed or assessed
Derived Formsimponderability or imponderableness, nounimponderably, adverb
something difficult or impossible to assess
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for imponderable
1794, "weightless," from assimilated form of in- (1) "not, opposite of" + ponderable (see ponder). Figurative use, "unthinkable," from 1814. Related: Imponderably. As a noun, by 1842.
Online Etymology Dictionary, © 2010 Douglas Harper