The Collaborative International Dictionary of English v.0.48:
Deuced \Deu"ced\, a. Devilish; excessive; extreme. [Low] -- Deu"ced*ly, adv. DeuseWordNet (r) 3.0 (2006):
deucedly adv 1: (used as intensives) extremely; "she was madly in love"; "deadly dull"; "deadly earnest"; "deucedly clever"; "insanely jealous" [syn: madly, insanely, deadly, deucedly, devilishly]