1. in a generous and ungrudging manner; - Example: "he ungrudgingly agreed to pay for everybody's dinner when the guests found themselves without cash"
WordNet (r) 3.0 (2006):
ungrudgingly
adv 1: in a generous and ungrudging manner; "he ungrudgingly
agreed to pay for everybody's dinner when the guests
found themselves without cash" [ant: grudgingly]