Which preposition to use with fustian

in Occurrences 2%

The florid imagery, gorgeous diction, and Oriental hyperboles, which possess a sort of wild propriety in the vehement sallies of Antar the Bedoween chieftain of the twelfth century, become cold extravagance and floundering fustian in the mouth of a barrister of the present age; and we question whether any but a native of the sister island would have ventured upon the experiment of their adoption.

Which preposition to use with  fustian