who ‧ ev ‧ er S2 /huːˈevə $ -ˈevər/ BrE AmE pronoun
1 . used to say that it does not matter who does something, is in a particular place etc:
I’ll take whoever wants to go.
When you’re done with the book, just give it to Kristin or Shelley or whoever.
2 . used to talk about a specific person or people, although you do not know who they are:
Whoever is responsible for this will be punished.
3 . whoever he/she is ( also whoever he/she may be ) used to say that you do not know who someone is:
You’ve got a message from Tony Gower, whoever he is.
4 . used to mean ‘who’ at the beginning of a question to show surprise or anger:
Whoever would do a thing like that to an old woman?