incoherent

Reading level: hard

Estimated CEFR level: C1 — Advanced

Estimated from word frequency; not an official CEFR classification.

Definition

adjective without logical or meaningful connection
adjective (physics) of waves having no stable definite or stable phase relation
adjective unable to express yourself clearly or fluently

From in- + coherent.

His incoherent questions were lost. — The Red Badge of Courage: An Episode of the American Civil War, Stephen Crane
Things weren't incoherent but non-existent. — Erik Dorn, Ben Hecht
An incoherent note heralded his return. — The Works of Rudyard Kipling: One Volume Edition, Rudyard Kipling

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