: not coherent: such as
a
: not able to talk or express yourself in a clear way that can be easily understood
The fever made her incoherent.
He was very upset and practically incoherent after the accident.
an incoherent patient
b
: not logical or well-organized : not easy to understand
an incoherent story [=a story that does not make sense]
The memo is completely incoherent.
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“Incoherent.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/incoherent. Accessed 24 Jun. 2026.
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