The Collaborative International Dictionary of English v.0.48:
Crookedly \Crook"ed*ly\, adv. In a curved or crooked manner; in a perverse or untoward manner. [1913 Webster]WordNet (r) 3.0 (2006):
crookedly adv 1: in a crooked lopsided manner; "he smiled lopsidedly" [syn: lopsidedly, crookedly]