co·gent 
/ˈkoʊʤənt/ adjective
/ˈkoʊʤənt/ adjective [more cogent; most cogent] formal : very clear and easy for the mind to accept and believe
▪ She offers some cogent [=convincing, persuasive] reasons for building new schools. ▪ a cogent [=reasonable] argument
▪ She offers some cogent [=convincing, persuasive] reasons for building new schools. ▪ a cogent [=reasonable] argument
— co·gen·cy /ˈkoʊʤənsi/ noun [noncount]
▪ I was impressed by the cogency of his arguments.
/ˈkoʊʤənsi/ noun [noncount] ▪ I was impressed by the cogency of his arguments.
— co·gent·ly adverb
