The Collaborative International Dictionary of English v.0.48:
Dryly \Dry"ly\, adv. In a dry manner; not succulently; without interest; without sympathy; coldly. [1913 Webster]WordNet (r) 3.0 (2006):
dryly adv 1: in a dry laconic manner; "I know that," he said dryly [syn: laconically, dryly, drily]