When you lie and say that you are the tax collector in order to trick people into giving you money, this is an example of when you defraud people.
Origin of defraudMiddle English defrauden ; from Old French defrauder ; from Classical Latin defraudare ; from de-, from + fraudare, to cheat ; from fraus, fraud
transitive verbde·fraud·ed, de·fraud·ing, de·frauds
Origin of defraudMiddle English defrauden, from Old French defrauder, from Latin dēfraudāre : dē-, de- + fraudāre, to cheat (from fraus, fraud-, fraud).
(third-person singular simple present defrauds, present participle defrauding, simple past and past participle defrauded)
From Old French defrauder, from de- + frauder