The Collaborative International Dictionary of English v.0.48:
Chivalrously \Chiv"al*rous*ly\, adv. In a chivalrous manner; gallantly; magnanimously. [1913 Webster]WordNet (r) 3.0 (2006):
chivalrously adv 1: in a gallant manner; "he gallantly offered to take her home" [syn: gallantly, chivalrously] [ant: unchivalrously]