The Collaborative International Dictionary of English v.0.48:
Crossly \Cross"ly\, adv. Athwart; adversely; unfortunately; peevishly; fretfully; with ill humor. [1913 Webster]WordNet (r) 3.0 (2006):
crossly adv 1: in an ill-natured manner; "she looked at her husband crossly" [syn: crossly, grouchily, grumpily]