adj. & n.
adj. 1 mature, grown-up. 2 a of or for adults (adult education). b euphem. sexually explicit; indecent (adult films).
n. 1 an adult person. 2 Law a person who has reached the age of majority. adulthood n. adultly adv.
[ L adultus past part. of adolescere grow up: cf. ADOLESCENT ]