goodwilly C2+

/ˈɡʊdwɪli/ well-disposed; full of goodwill (archaic)

unwillingly C2+

/ʌnˈwɪlɪŋli/ in a reluctant manner; against one's wishes

willful C2+

/ˈwɪl.fəl/ deliberate and intentional, or stubbornly self-willed