Whichsoever

pronoun

1. (interrogative) Which ever; emphatic form of 'which'.

   "These chocolates all look delicious. Whichever shall I choose?"

2. Irrespective of the one(s) that; no matter which one(s).

   "Whichever you pick, be content with it."

3. Any or either one(s) that; the one(s) that.

   "I have a few books; please borrow whichever interest you."

4. Any or either one(s).

   "I don't mind which you have. Take whichever."

5. According to or depending upon which one(s).

   "I'll buy the red shirt or the blue shirt, whichever is cheaper."