Source : Webster's Revised Unabridged Dictionary (1913)

Chivalrously \Chiv"al*rous*ly\, adv.
   In a chivalrous manner; gallantly; magnanimously.

Source : WordNet®

chivalrously
     adv : in a gallant manner; "he gallantly offered to take her home"
           [syn: {gallantly}] [ant: {unchivalrously}]