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Definition of indecipherable
indecipherable
/ˌɪndɪˈsaɪfərəbəl/
in · de · ci · pher · a · ble
Adverb:indecipherably
indecipherable Lexical Profile
CEFR
C1
Grade
10
Tier
2
Usage
Top 10k
Syllables
6
indecipherable Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• adjective
1
Impossible to read, decode, or make out clearly, especially of handwriting, symbols, or faded text.
Example
"The physician's hurried handwriting on the prescription pad was completely indecipherable to the pharmacist."
2
Impossible to understand, interpret, or make sense of, such as a muffled sound, a complex situation, or a person's facial expression.
Example
"She listened with an indecipherable expression on her face, giving no hint of whether she agreed with the proposal."
Synonyms
View all synonyms for indecipherable Antonyms
View all antonyms for indecipherable• Rhymes for indecipherable
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Word Origin & Etymology
Formed in the late 18th century by adding the negative prefix 'in-' to 'decipherable', which ultimately traces back to the Arabic word 'ṣifr' (meaning 'empty' or 'zero') via French 'déchiffrer'.
Cite this Entry
Wordmom. (2026). Definition of Indecipherable. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/indecipherable