Longman Dictionary of Contemporary English homepage

Date: 1600-1700
Language: Latin
Origin: , present participle of cogere 'to drive together, collect', from co- ( CO-) + agere 'to drive'

cogent

 adjective
     
co‧gent formal
if a statement is cogent, it seems reasonable and correct
cogent argument/reason/case etc
a cogent argument for banning the drug
—cogently adverb
—cogency noun [uncountable]
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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