90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.
determiner, pronoun /wɪtʃˈevə(r)/
Whichever can be used in the following ways:
as a determiner (followed by a noun): Customers will choose whichever product is cheaper.
as a pronoun (without a following noun): You can contact us by telephone or email, whichever you prefer. (followed by ‘of’): ♦ You can choose whichever of the two dates is more convenient for you.