The Collaborative International Dictionary of English v.0.48:
Unluckily \Un*luck"i*ly\, adv. In an unlucky manner. [1913 Webster]WordNet (r) 3.0 (2006):
unluckily adv 1: by bad luck; "unfortunately it rained all day"; "alas, I cannot stay" [syn: unfortunately, unluckily, regrettably, alas] [ant: as luck would have it, fortuitously, fortunately, luckily]