leniency Syllabification: (le·nien·cy)Pronunciation: /ˈlēnēənsē, ˈlēnyən(t)sē/Definition of leniency noun the fact or quality of being more merciful or tolerant than expected; clemency:the court could show leniencyDerivatives lenience noun leniency in other Oxford dictionaries Definition of leniency in the British & World English dictionary