I would like to understand how "whichever" works in this case.
My book gives an instance about the word whichever which confuses me.
Ex:You should wear whichever jacket will be warmest.
If whichever = no matter which, it could be rewritten as: You should wear no matter which jacket will be warmest. I can't image using whichever here to express that no matter which jacket, you should wear the warmest one. I feel the meaning so strange if use whichever in that order. Is there more detailed explanation of this case?