Main entry: incoherent
Definition: (physics) of waves having no stable definite or stable phase relation
Antonyms: coherent
Definition: (physics) of waves having a constant phase relation
Main entry: incoherent
Definition: without logical or meaningful connection
Usage: a turgid incoherent presentation
Antonyms: ordered, logical, consistent, coherent
Definition: marked by an orderly, logical, and aesthetically consistent relation of parts
Antonyms: clear-thinking, clearheaded
Definition: not mentally confused; able to think clearly and act intelligently
Antonyms: ordered
Definition: having a systematic arrangement; especially having elements succeeding in order according to rule
Antonyms: logical
Definition: capable of or reflecting the capability for correct and valid reasoning
Antonyms: connected
Definition: joined or linked together
Main entry: incoherent, tongue-tied
Definition: unable to express yourself clearly or fluently
Usage: felt tongue-tied with embarrassment; incoherent with grief
Antonyms: articulate
Definition: expressing yourself easily or characterized by clear expressive language