IPA: /ˈpriːvjuːər/
KK: /ˈpriːvjuːər/
A person who watches a film or TV show before it is officially released to give feedback or reviews.
The previewer shared their thoughts on the new movie before it hit theaters.
Previewer → It is formed from "pre-" (meaning before) and "view" (from Old French *veue*, meaning sight or seeing) and "-er" (meaning a person who). A previewer is a person who sees or views something before it is officially presented or released.
Think of someone who looks at something 'before' ('pre-') it is shown to others — that's what a previewer does.