(n.) The quality or state of being willing; free choice or consent of the will; freedom from reluctance; readiness of the mind to do or forbear.

OK a thing for acceptance accord acquiescence affinity affirmation affirmative affirmative voice agreement allegiance approbation approval aptitude aptness assent aye bent bias blessing brightness cast cleverness compliance conatus conduciveness conformity connivance consent delight diathesis disposition docility duteousness dutifulness eagerness educability endorsement facility faith fealty feeling for homage impressionability inclination intelligence leaning liability liking loyalty malleability moldability motivation obedience obediency observance okay penchant permission plasticity pliability predilection predisposition prejudice probability proclivity promptitude promptness proneness propensity quickness ratification readiness receptivity sanction sensitivity to service servility servitium soft spot submission submissiveness suit and service suit service susceptibility teachability teachableness tendency trainableness tropism turn twist ungrudgingness unloathness unreluctance warp weakness