A cogent argument.
An example of cogent is the idea that climate change is caused by the actions of humans.
Origin of cogent
- Latin cōgēns cōgent- present participle of cōgere to force co- co- agere to drive ag- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Latin cōgēns, present active participle of cōgō (“drive together, compel”), from cō + agō (“drive”).