Incoherent is an adjective that describes something that is unclear or difficult to understand due to a lack of organization or logical structure.


US English

UK English

Part of Speech



Confused, unintelligible, muddled, jumbled, disorganized, rambling, garbled.


Coherent, logical, organized, clear, lucid, articulate, intelligible.

Word Forms

Part of Speech Words
Noun incoherence, incoherences, incoherencies, incoherency
Verb None
Adjective incoherent
Adverb incoherently

Example Sentences

  • The speaker’s argument was incoherent and lacked any logical structure.

  • The incoherent handwriting made it difficult to decipher the message.

  • The movie’s plot was incoherent and confusing, making it hard to follow.

  • The patient’s speech was incoherent due to the effects of the medication.


The word “incoherent” is often used to describe something that lacks logical structure and is difficult to understand or follow. It can be used in a variety of contexts, from describing a confusing movie plot to the speech of a person who is under the influence of drugs. Understanding the word’s roots can help in understanding its meaning and usage. “Incoherent” comes from the Latin words “in-” meaning “not” and “cohaerere” meaning “to stick together.”

Other variations of the word “incoherent” can be created by adding prefixes and suffixes. For example, the prefix “co-” can be added to create the word “coherent,” which means “logical” or “organized.” Alternatively, the suffix “-cy” can be added to create the noun form “incoherence,” which refers to the lack of logical structure.

In conclusion, each of these words have unique meanings, and understanding their definitions, parts of speech, synonyms, antonyms, and how they can be used in context is important to effective communication. Prefixes, suffixes, and roots can also be helpful in understanding and creating variations of these words.