cogent

adj

Etymology: From French cogent, from Latin cōgēns, present active participle of cōgō (“drive together, compel”), from cō + agō (“drive”).

1. Reasonable and convincing; based on evidence.

   “We congratulate our correspondents on some very cogent reasoning, and shall have to watch our step even more carefully in future!”

   “Clearly, the mere fact that some Emergentists may in practice have made use of invented examples in testing their theories does not tell against any cogent general objections they may have offered to such practice. What is needed is a decision on the methodological point, not just a cry of “You did it too!”.”

2. Appealing to the intellect or powers of reasoning.
3. Forcefully persuasive; relevant, pertinent.

   “The prosecution presented a cogent argument, convincing the jury of the defendant's guilt.”