un·​de·​ci·​pher·​able | \ˌən-dē-ˈsī-f(ə-)rə-bəl \

Definition of undecipherable 

: unable to be deciphered : not decipherable : indecipherable undecipherable handwriting

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Other Words from undecipherable

undecipherably \ ˌən-​dē-​ˈsī-​f(ə-​)rə-​blē \ adverb

Synonyms & Antonyms for undecipherable


illegible, indecipherable, unreadable


clean, decipherable, fair, legible, readable

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Examples of undecipherable in a Sentence

Recent Examples on the Web

For anyone who has retreated in frustration from their sewing machine, defeated by bobbins, uncontrollable thread tension and undecipherable dress patterns, stitchery as creative fun might be a foreign concept. Kathy Routliffe, chicagotribune.com, "Former Winnetkan uses summer camps to open world of fashion, sewing to young students," 24 May 2018 And so, during the most significant shift in the technology of politics since the television, the first draft of history is filled with undecipherable whorls and empty pages. Alexis C. Madrigal, The Atlantic, "What Facebook Did to American Democracy," 12 Oct. 2017 But Charlie Gard shows that the barbarian no longer comes wielding a club and grunting in some undecipherable tongue. William Mcgurn, WSJ, "For the Love of Charlie Gard," 17 July 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'undecipherable.' 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 undecipherable

1758, in the meaning defined above

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Time Traveler for undecipherable

The first known use of undecipherable was in 1758

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playful or foolish behavior

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