[in-kuh n-see-vuh-buh l]

Origin of inconceivable

First recorded in 1625–35; in-3 + conceivable
Related formsin·con·ceiv·a·bil·i·ty, in·con·ceiv·a·ble·ness, nounin·con·ceiv·a·bly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for inconceivably

Historical Examples of inconceivably

British Dictionary definitions for inconceivably


  1. incapable of being conceived, imagined, or considered
Derived Formsinconceivability or inconceivableness, nouninconceivably, adverb
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 inconceivably



1630s, from in- (1) "not, opposite of" + conceivable. Related: Inconcievably. An Old English word for this was unasmeagendlic.

Online Etymology Dictionary, © 2010 Douglas Harper