Undecipherable

//ʌndɪˈsaɪfəɹəbəl// adj

adj ·Uncommon ·Advanced level

Definitions

Adjective

1
Not easily deciphered; difficult to read.

Adjective

1
not easily deciphered wordnet

Synonyms

indecipherable abstruse dense illegible illegible impenetrable

Antonyms

clear decipherable exoteric pellucid

Etymology

From un- + decipherable.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.