cogency

Unfortunately, Vermeulen lacked an air of cogency, most likely due to nerves, and was not as convincing.

I have attended a few of his talks, which are blessed with cogency, wit, and deeply researched and clearly presented arguments.

Burke would have agreed entirely, and admired the cogency of so few words.

These do not lack cogency, but betray a kind of thought different from that of the friends.

But, like all oft-repeated truths, it has in time lost something of its actuality and cogency.

This is the thought which underlies and gives cogency to the whole argument.

What it can do, it does with a sharpness of effect and with a cogency of appeal no other art can rival.

Weismann's demand for facts in support of the main proposition revealed at once that none having real cogency could be produced.