Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
unintelligibly
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "unintelligibly" is correct and usable in written English.
It can be used to describe speech or writing that is difficult or impossible to understand. Example: "He spoke so quickly and unclearly that his words came out unintelligibly."
✓ Grammatically correct
News & Media
Alternative expressions(2)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
48 human-written examples
Ant rattles through his munificent two-hour, 30-song set, occasionally mumbling unintelligibly between songs, and while his singing voice has never been a thing of immense beauty, his attitude and stage presence most indefatigably are.
News & Media
For a long time he muttered unintelligibly, kept biting his lips and gently shaking his head.
News & Media
Some of the children inside, when not in classes, would rock back and forth; some would flap their hands or jabber unintelligibly.
News & Media
She speaks to him in unintelligibly accented English.
News & Media
Did it matter that the hotel, one of the cheapest in town, was situated just across from the insane asylum, where day and night the inmates pressed their faces against the iron bars and moaned and shook and shouted unintelligibly?
News & Media
Then, too, some parents may not see the point of talking to babies, who can't yet speak, or even of talking much to toddlers, who do, but sometimes unintelligibly.
News & Media
She replied unintelligibly.
News & Media
At Cake Shop he sang through most of a midnight set — unintelligibly and off key — against sloppy, deep-murk funk grooves with bleating trumpet and saxophone.
News & Media
(Literally flat: the videos are projected all but unintelligibly on the floor).
News & Media
Timbres of instruments are barbed with fuzz tone and static; the voices that infrequently appear might be shouting unintelligibly or nearly buried in the mix.
News & Media
I got angry because of his inflammatory language, and since this was not Skype, where I can think before I reply, I ended up shouting back at him unintelligibly.
News & Media
Expert writing Tips
Best practice
Use "unintelligibly" to describe speech, writing, or other forms of communication that are impossible or very difficult to understand. For instance, "The old recording was so damaged that the voices were heard only unintelligibly."
Common error
Avoid using "unintelligibly" when "inaudibly" is more appropriate. "Unintelligibly" refers to a lack of clarity, whereas "inaudibly" refers to a lack of sound. For instance, use "inaudibly" if someone whispered very quietly, and "unintelligibly" if their accent was too thick to understand.
Source & Trust
94%
Authority and reliability
4.8/5
Expert rating
Real-world application tested
Linguistic Context
The adverb "unintelligibly" functions to modify verbs, adverbs, or adjectives, describing the manner in which an action is performed. It indicates that something is communicated or expressed in a way that is impossible or extremely difficult to understand, as Ludwig shows in several examples.
Frequent in
News & Media
100%
Less common in
Science
0%
Formal & Business
0%
Academia
0%
Ludwig's WRAP-UP
In summary, "unintelligibly" is a grammatically sound adverb that describes something expressed in a way that is difficult or impossible to understand. As Ludwig highlights, its usage is prevalent in diverse contexts, especially within news and media. While synonyms like "incomprehensibly" and "indistinctly" exist, "unintelligibly" specifically addresses clarity. Ludwig's examples show that the term is suitable for various communication forms, emphasizing its broad applicability. Avoid confusing "unintelligibly" with "inaudibly", and using it in contexts where it isn't about the clarity but the logic of content. It's safe to say that using the adverb "unintelligibly" can significantly improve the quality and precision of your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
in an incomprehensible manner
Replaces "unintelligibly" with a more formal synonym, focusing on the inability to understand.
indistinctly
Indicates a lack of clear distinction in speech or sound, similar to being unintelligible.
inarticulately
Focuses on the speaker's inability to express themselves clearly, resulting in unintelligible speech.
murmuringly
Describes speaking in a low, unclear voice, often making the words unintelligible.
mumbling
Implies speaking quietly and unclearly, causing a lack of intelligibility.
in a garbled way
Suggests a distorted or confused manner of speaking, leading to unintelligibility.
in a muddled fashion
Implies a confused and unclear presentation, making the message unintelligible.
obscurely
Indicates a lack of clarity or explicitness, resulting in unintelligibility.
in a slurred tone
Describes speech that is run together, making it difficult to understand.
in a confused voice
Highlights the speaker's mental state as the reason for their lack of clear communication.
FAQs
How can I use "unintelligibly" in a sentence?
You can use "unintelligibly" to describe something spoken, written, or expressed in a way that is impossible or very difficult to understand. For example, "He mumbled "unintelligibly" under his breath".
What are some synonyms for "unintelligibly"?
Some synonyms for "unintelligibly" include "incomprehensibly", "indistinctly", and "inarticulately". The best choice depends on the specific nuance you want to convey.
Is it better to say "unintelligibly" or "incoherently"?
"Unintelligibly" refers specifically to a lack of clarity in expression, while "incoherently" suggests a lack of logical connection or organization in thought or speech. Choose "unintelligibly" if the words are unclear but possibly meaningful, and "incoherently" if the words are jumbled and nonsensical.
What does it mean when someone speaks "unintelligibly"?
When someone speaks "unintelligibly", it means their words are difficult or impossible to understand, whether because of poor articulation, mumbling, a strong accent, or some other factor that hinders clear communication.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
94%
Authority and reliability
4.8/5
Expert rating
Real-world application tested