Entry 2 senses · 2 variants Webster, 1913 Gallantly /găl'-ən-tlē/ · Gal·lant·ly · IPA /ˈɡæl.ənt.li/ adv. adv. 01 adv. In a polite or courtly manner; like a gallant or wooer. 1. In a polite or courtly manner; like a gallant or wooer. 02 adv. In a gallant manner. 1. In a gallant manner.