IPA: /ˈfɪlmˌɡoʊ.ər/
KK: /ˈfɪlmˌɡoʊər/
A person who regularly goes to watch movies in a cinema.
As a filmgoer, I enjoy watching the latest releases every weekend.
Filmgoer → It is formed from "film" (from Old English *filme*, meaning a thin layer or membrane) and "goer" (from Old English *gān*, meaning to go). A filmgoer is someone who goes to see films.
Think of someone who 'goes' ('goer') to see a 'thin layer' or 'membrane' of moving images — that's what a filmgoer does.
No commonly confused words.