Which preposition to use with derider

of Occurrences 1%

He found it impossible, however, to restrain his contempt of bigotry; and, like most great writers in Catholic countries, was a derider of the pretensions of devotees, and the discords and hypocrisies of the convent.

to Occurrences 1%

She is a main derider to her capacity of those that are not her preachers, and censures all sermons but bad ones.

Which preposition to use with  derider