1 the person or people who; any person whoWhoever says that is a liar.Send it to whoever is in charge of sales.
2 used to say that it does not matter who, since the result will be the sameCome out of there, whoever you are.I don't want to see them, whoever they are.3 used in questions to mean ‘who’, expressing surpriseWhoever heard of such a thing!

huːˈevə(r)
huːˈevər