whoever /huːˈevər/ pronoun
WHICH PERSON › the person who: Whoever broke the window will have to pay for it. Could I speak to whoever is in charge please?
ANY PERSON › used to say that it is not important which person or group does something: Can whoever leaves last lock up, please?
SURPRISE › used to ask who a person is when expressing surprise: Whoever could that be phoning at this time? Whoever would believe such a ridiculous story?