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co‧her‧ent

1 if a piece of writing, set of ideas etc is coherent, it is easy to understand because it is clear and reasonable :
The three years of the course are planned as a coherent whole.
a coherent account of the incident
The three years of the course are planned as a coherent whole.
a coherent account of the incident2 if someone is coherent, they are talking in a way that is clear and easy to understand :
He sounded coherent, but he was too ill to have any idea what he was saying.
He sounded coherent, but he was too ill to have any idea what he was saying.3 if a group is coherent, its members are connected or united because they share common aims, qualities, or beliefs :
They were never a coherent group.
They were never a coherent group. —coherently adverb:
She could not think coherently.
She could not think coherently.