in·​de·​ci·​pher·​able | \ˌin-di-ˈsī-f(ə-)rə-bəl \

Definition of indecipherable 

: incapable of being deciphered indecipherable writing an indecipherable message

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Other Words from indecipherable

indecipherably \ˌin-​di-​ˈsī-​f(ə-​)rə-​blē \ adverb

Synonyms & Antonyms for indecipherable


illegible, undecipherable, unreadable


clean, decipherable, fair, legible, readable

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Examples of indecipherable in a Sentence

His handwriting is almost indecipherable. after so many years the paper label in the drawer of the antique desk is indecipherable

Recent Examples on the Web

There’s English and then there’s the language my daughters speak, which is as indecipherable to me as the sounds of a rotary motor. Chris Erskine,, "A toast to New Orleans, the place it all began for us," 6 July 2018 The plot may be as indecipherable as The Big Sleep but the action is insane in this sixth installment of Mission: Impossible. Todd Mccarthy, The Hollywood Reporter, "'Mission: Impossible — Fallout': Film Review," 12 July 2018 He and Escobar faced one another as if two spiraling spirits, summoning an array of voices — trills, gasps and twisting high and low notes into indecipherable languages. Jeffrey Fleishman,, "Voices of the City: Experimental vocalist Carmina Escobar uses her voice to explore herself and others," 29 Mar. 2018 The plot may be as indecipherable as The Big Sleep, but the action is insane in this sixth installment of Mission: Impossible. Aja Hoggatt,, "Critics are loving Mission: Impossible -- Fallout," 12 July 2018 The lyrics are indecipherable to everyone except the most devout Pantera-philes. Matt Schudel, Washington Post, "Vinnie Paul, hard-hitting drummer for heavy metal band Pantera, dies at 54," 23 June 2018 Dodek agrees with Fidelity’s conclusion; the postmark is indeed indecipherable. Sean P. Murphy,, "For lack of a legible postmark, retirement fund takes a hit," 5 June 2018 The code the team created was indecipherable to the enemy and a key factor in the American military victories at Iwo Jima, Saipan, and several other major battles in the Pacific theater. Jessica Campisi And Artemis Moshtaghian, CNN, "One of the last remaining Navajo code talkers has died," 12 June 2018 Rajakumar, the builder of Gubyaukgyi, inscribed the stone in four languages, among them, the previously indecipherable Pyu language. Antonia Neubauer, Town & Country, "How to Plan a Trip to Asia," 5 Oct. 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'indecipherable.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of indecipherable

1802, in the meaning defined above

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Time Traveler for indecipherable

The first known use of indecipherable was in 1802

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English Language Learners Definition of indecipherable

: impossible to read or understand : not decipherable

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Spanish Central: Translation of indecipherable

Nglish: Translation of indecipherable for Spanish Speakers

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having a pattern of small flowers

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