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indecipherable

[in-di-sahy-fer-uh-buh l]
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adjective
  1. not decipherable; illegible.
  2. not understandable; incomprehensible.
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Origin of indecipherable

First recorded in 1795–1805; in-3 + decipherable
Related formsin·de·ci·pher·a·bil·i·ty, in·de·ci·pher·a·ble·ness, nounin·de·ci·pher·a·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words

illegiblecrypticscrawledhieroglyphic

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British Dictionary definitions for indecipherable

indecipherable

adjective
  1. not decipherable; illegible
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Derived Formsindecipherability or indecipherableness, nounindecipherably, 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 indecipherable

adj.

1802, from in- (1) "not" + decipherable (see decipher). Related: Indecipherability.

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Online Etymology Dictionary, © 2010 Douglas Harper