Learn how to say Adultness correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word adult:
a person who is fully grown or developed:
children should be accompanied by an adult
a fully developed animal.
Law a person who has reached the age of majority.
fully grown or developed:
an adult woman
of or for adult people:
emotionally and mentally mature:
an effort to be adult and civilized
suitable only for adults (used euphemistically to refer to a sexually explicit film, book, or magazine).
mid 16th century: from Latin adultus, past participle of adolescere ‘grow to maturity’ (see adolescent)