cogent

Also she would have cogent reason for keeping such a part in the affair a secret.

Considering his great distress, the reasons must have been cogent indeed.

That's the most cogent thought you ever had, but setting the date is the bride's business.

The Master was unimpeachable; His terse, cogent assertions were unanswerable.

And yet they have the broadest meaning and the most cogent application.

The style is very felicitous, and the reasoning clear and cogent.

And he can always give you the most cogent reasons for the faith that is in him.

How cogent this necessity is appears directly the alternative is stated.

Can we not find here the most cogent reasons for giving up the world?

He adduces a cogent reason for thisNot as fools, but as wise.