Which preposition to use with gruffness

of Occurrences 2%

" There was a slight dryness in John's voice as he made the statement, which accounted for the gruffness of Peter's acquiescence.

with Occurrences 1%

I was rather pleased at the captain's gruffness with him, and resolved that as soon as the opportunity offered I would discuss the crafty gentleman with Riggs.

Which preposition to use with  gruffness