Whosever vs Whoever - What's the difference?

As pronouns the difference between whosever and whoever

is that whosever is of whomever while whoever is whatever person or persons.

An emphatic form of who.

Of whomever.

* 1866 , , The Galaxy , W.C and F.P. Church, page 584

"And she is not wholesome, whosever word it was. She was there, hanging about him when he was so bad, before the worst came."

(-)

(An emphatic form of) who .

(en-pron)

Whatever person or persons.

Whoever thought up that stupid idea?

(head)

(attention)