Which preposition to use with pratings

of Occurrences 7%

It was as if every second man of the command fell before that withering fire, and in the midst of the tumult of groans, screams, and savage war-whoops could be heard shouts behind us, telling that the rear-guard, who a few moments previous were prating of their bravery, had turned and fled like cowards that they were.

about Occurrences 3%

Somebody said lately that the kindergarten people had a certain stock of metaphysical statements to be aired on every occasion, and that they were over-fond of prating about the "being" of the child.

by Occurrences 2%

Any thing short of this will be set down as mere prating by every man of common sense.

to Occurrences 1%

Hold your prating to the audience: here is honest Mr Williams, just come in, half mellow, from the Rose Tavern.

Which preposition to use with  pratings