Which preposition to use with prosy

in Occurrences 2%

This was placed in St. Paul's Cathedral, of which King was chief residentiary, and may still be seen in the present Cathedral King's elegy is very prosy in starting, but improves as it goes along, and is most ingenious throughout.

at Occurrences 1%

" "Wellhumit's a little prosy at times."

for Occurrences 1%

The Demi-monde is much too prosy for him.'

of Occurrences 1%

But Hapley was skilful with his rhetoric, had a turn for ridicule rare in a scientific man, was endowed with vast energy, and had a fine sense of injury in the matter of the extinguished species; while Pawkins was a man of dull presence, prosy of speech, in shape not unlike a water-barrel, over conscientious with testimonials, and suspected of jobbing museum appointments.

Which preposition to use with  prosy