Which preposition to use with duffer

in Occurrences 4%

The cosmopolitan Antiochenes returned the compliment, regarding Romans as mere duffers in depravity, philistines in art, but capable in war and government, and consequently to be feared, if not respected.

at Occurrences 2%

"The train-robbers were such thoroughgoing duffers at the trade," I said, "that if they had left their names and addresses they wouldn't have made it much easier.

for Occurrences 2%

" "That's a might of money to pay the old duffer for one night's work, Mark," muttered Jim.

among Occurrences 1%

But Sylvia was not a boy, and her fine, promising game of tennis, her excellence in the swimming-pool, and her success on the gymnasium floor and on the flying rings, served no purpose but to bring to her the admiration of the duffers among the girls, whom she despised, and the unspoken envy of the fraternity girls, whose overtures at superficial friendliness she constantly rebuffed with stern, wounded pride.

Which preposition to use with  duffer