incoherent

adjective

in·​co·​her·​ent ˌin-kō-ˈhir-ənt How to pronounce incoherent (audio)
-ˈher-
: lacking coherence: such as
a
: lacking normal clarity or intelligibility in speech or thought
incoherent with grief
b
: lacking orderly continuity, arrangement, or relevance : inconsistent
an incoherent essay
c
: lacking cohesion : loose
incoherently adverb

Did you know?

Something that is coherent holds or sticks together firmly, with resistance to separation (that is, it coheres). Coherent, ultimately from the Latin co- ("together") and haerēre ("to stick or cling"), entered English in the 16th century and almost from the beginning was used both of physical things ("coherent stone") and of things which hold together in a much less palpable way ("coherent thoughts"). Its antonym, incoherent, entered the language some decades later. Like coherent, incoherent can be applied to both the tangible and the intangible. But, whether we are speaking of sand or logic, all things incoherent have one thing in common: they do not hold together, literally or figuratively, in a unified or intelligible whole.

Examples of incoherent in a Sentence

The fever made her incoherent. He was very upset and practically incoherent after the accident. The memo is completely incoherent.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
As recently as January, the Liberals trailed the Conservatives by almost twenty points in the polls, owing to a wave of severe, if sometimes incoherent, dissatisfaction with Trudeau. Adam Gopnik, New Yorker, 1 May 2025 In an interview with the Financial Times published Monday, Langone decried Trump’s tariffs as too large, imposed too hastily, and based on an incoherent mathematical formula. Michael Hiltzik, Los Angeles Times, 17 Apr. 2025 This new version of La Bohème is three times more complicated than the original and sometimes incoherent. Jeffrey Seller, Vulture, 11 Apr. 2025 But following years of deploying economic weapons in an erratic and incoherent manner, the opportunity went to waste. Edward Fishman, The Atlantic, 24 Feb. 2025 See All Example Sentences for incoherent

Word History

First Known Use

1599, in the meaning defined above

Time Traveler
The first known use of incoherent was in 1599

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Cite this Entry

“Incoherent.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/incoherent. Accessed 10 May. 2025.

Kids Definition

incoherent

adjective
in·​co·​her·​ent ˌin-kō-ˈhir-ənt How to pronounce incoherent (audio)
-ˈher-
1
: not sticking closely or compactly together : loose
2
: not clearly or logically connected
told an incoherent story
3
: not clear or understandable in speech or thought
incoherent with grief
incoherently adverb

Medical Definition

incoherent

adjective
in·​co·​her·​ent -ənt How to pronounce incoherent (audio)
: lacking clarity or intelligibility usually by reason of some emotional stress
incoherent speech
incoherently adverb

More from Merriam-Webster on incoherent

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