X, xadjective

SMART Vocabulary: related words and phrases

Cinema ratings & types of film
15
18
action movie
actioner
animated
computer-animated
crime
feature-length
G, g
hate-watch
hip-hopera
PG-13
R-rated
screwball
sexploitation
silent film
skin flick
U, u
X, x
X-rated

NC-17 | American Dictionary

NC-17
adjective[ not gradable ]
us/ˈenˌsiˌsev·ənˈtin/
used in the US for movies that no one under the age of 17 will be admitted to see