asseverate

—At this, the Boy suffered some Confusion, then to asseverate, My Tutor is deceased, Sir.

Why merely say something, when they can declare, assert, expostulate, announce, or asseverate it?

Sometimes, Ms. Silveri asseverated, “ ‘she said’ is just the very best way to say that.”

We asseverate it in a peculiarly earnest manner, or with increased positiveness as what can not be disputed.

The point at issue, Entwistle's deep patient voice asseverated, was this.