A lack of clarity or logical connection in speech or writing.

स्पष्टता या तार्किक संबंध की कमी।

English Usage: The incoherence of his argument made it difficult to understand his point.

Hindi Usage: उसके तर्क की अस्पष्टता ने उसके विचार को समझना मुश्किल बना दिया।