Word family noun willingness ≠ unwillingness adjective willing ≠ unwilling adverb willingly ≠ unwillingly
From Longman Dictionary of Contemporary Englishwillingnesswill‧ing‧ness /ˈwɪlɪŋnəs/ ●○○ noun [uncountable] the state of being prepared to do something He has shown no willingness to compromise. 