whoever

pronoun

1. interrogativeWho ever: an emphatic form of who.

   “Whoever thought up that stupid idea?”

2. fused relativeAny person or persons that.

   “Whoever breaks the law will be punished.”

3. fused relativeThe person that (no matter who).

   “Whoever robbed that old lady ought to be locked up.”

   “I don't know what it is. Ask whoever put it there.”

4. Regardless of the person or persons that.

   “Whoever stole the painting, the police will catch the thief in no time.”

5. informalAny person or persons.

   “I don't care who gets it; give it to whoever.”

Misspelling of who ever other than in interrogative use.