Answer:

adult

Answer	Crossword Clue
ADULT	Like some videos
ADULT	Full-price payer
ADULT	Grown-up

ADULT	Mature
ADULT	X-rated, perhaps
ADULT	Imago, e.g.
ADULT	No longer minor
ADULT	Out of the teens
ADULT	Past the pupal stage
ADULT	Mature, supposedly
ADULT	X-rated

ADULT	Grown up
ADULT	Ticket-price category
ADULT	Minor supervisor
ADULT	Chaperone, often
ADULT	Fully grown
ADULT	Chaperone, usually
ADULT	Not for kids
ADULT	Not for minors

ADULT	Chaperon, e.g.
ADULT	Former minor
ADULT	No longer a minor
ADULT	Kind of education
ADULT	Chaperon, usually
ADULT	Stallion, e.g.
ADULT	Stallion, for one
ADULT	Full-price payer at the movies

ADULT	.. education
ADULT	One never seen in "Peanuts"
ADULT	Past puberty
ADULT	Entertainment type
ADULT	Old enough to know better
ADULT	What "XXX" may mean
ADULT	NC-17 or XXX
ADULT	XXX

ADULT	21-year-old, by most accounts
ADULT	Grownup
ADULT	... supervision
ADULT	Past adolescence
ADULT	In one's maturity