Unforthcomingly

He looked slyly at the Scotland Yard man and probed him, "You know who tbey think did it, don't you?" "Yes," said Inspector Hughes unforthcomingly.

Burns replies politely but unforthcomingly about this poem; he uses his allegedly untutored social manners to excuse his lack of response.

Passing the army camp we were spoken to by men hanging about there, but when we only grunted in answer unforthcomingly, they paid no further attention to us.