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Synonyms

unintelligible

American  
[uhn-in-tel-i-juh-buhl] / ˌʌn ɪnˈtɛl ɪ dʒə bəl /

adjective

  1. not intelligible; not capable of being understood.

    Synonyms:
    undecipherable, baffling, incomprehensible

unintelligible British  
/ ˌʌnɪnˈtɛlɪdʒɪbəl /

adjective

  1. not able to be understood; incomprehensible

"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

Other Word Forms

  • unintelligibility noun
  • unintelligibleness noun
  • unintelligibly adverb

Etymology

Origin of unintelligible

First recorded in 1610–20; un- 1 + intelligible

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The practice could be seen everywhere on the daily commute, adorned on walls, tunnels and metal shutters - always unintelligible, loud and colourful.

From BBC • Oct. 22, 2025

The final five minutes were almost unintelligible, marked almost entirely by crosstalk, as Baier refused to let Harris speak uninterrupted.

From Slate • Oct. 17, 2024

For example, during a rally in Montana on Friday, Trump appears to “glitch” and pause as he searches for words and then makes unintelligible noises and strange utterances.

From Salon • Aug. 13, 2024

After a corrupted chip rendered Voyager 1’s transmissions unintelligible in November 2023, engineers nursed the spacecraft back to health.

From Science Magazine • May 23, 2024

Words devolve into letters, letters into unintelligible bumps.

From "All the Light We Cannot See" by Anthony Doerr