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unintelligible

[uhn-in-tel-i-juh-buh l]
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adjective
  1. not intelligible; not capable of being understood.

Origin of unintelligible

First recorded in 1610–20; un-1 + intelligible
Related formsun·in·tel·li·gi·bil·i·ty, un·in·tel·li·gi·ble·ness, nounun·in·tel·li·gi·bly, adverb
Can be confusedunintelligent unintelligible

Synonyms

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incomprehensible, baffling, undecipherable.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for unintelligible

unintelligible

adjective
  1. not able to be understood; incomprehensible
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 unintelligible

adj.

1610s, "incapable of being understood," from un- (1) "not" + intelligible. Related: Unintelligibly.

Online Etymology Dictionary, © 2010 Douglas Harper