expatiate

Mourdock was not the only Republican candidate to expatiate on the subject of rape.

In the East, imagination is at liberty to expatiate on past grandeur, wisdom, and politeness.

As to the comparison between the two ladies, I will expatiate more on that subject, (for I like it,) when I have had them both.

Mrs. Evelyn let John expatiate on her daughter's heroism till steps were heard approaching, and his aunt knocked at the door.

But we must not expatiate on its effects; we must only give a little attention to the means by which they are achieved.

I'll warrant ye, the Sergeant no' troubled himself to expatiate on the renown of the country where his regiment was raised?