A a


    • US Pronunciation
    • US IPA
    • UK Pronunciation
    • UK IPA
    • [uh-duhlt, ad-uhlt]
    • /əˈdʌlt, ˈæd ʌlt/
    • /ˈædʌlt/
    • US Pronunciation
    • US IPA
    • [uh-duhlt, ad-uhlt]
    • /əˈdʌlt, ˈæd ʌlt/

Definitions of adult word

  • countable noun adult An adult is a mature, fully developed person. An adult has reached the age when they are legally responsible for their actions. 3
  • countable noun adult An adult is a fully developed animal. 3
  • adjective adult Adult means relating to the time when you are an adult, or typical of adult people. 3
  • adjective adult If you say that someone is adult about something, you think that they act in a mature, intelligent way, especially when faced with a difficult situation. 3
  • adjective adult You can describe things such as films or books as adult when they deal with sex in a very clear and open way. 3
  • adjective adult having reached maturity; fully developed 3

Information block about the term

Origin of adult

First appearance:

before 1525
One of the 28% oldest English words
1525-35; 1925-30 for def 3; < Latin adultus grown (past participle of adolēre to make grow), equivalent to ad- ad- + ul- (identical with base al- in aliment, ol- in prolific) + -tus past participle suffix

Historical Comparancy

Parts of speech for Adult


adult popularity

A common word. It’s meaning is known to most children of preschool age. About 99% of English native speakers know the meaning and use the word.
Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".

adult usage trend in Literature

This diagram is provided by Google Ngram Viewer

Synonyms for adult

noun adult

  • person — a human being, whether an adult or child: The table seats four persons.
  • woman — the female human being, as distinguished from a girl or a man.
  • man — Unix manual page
  • gentleperson — a person of good family and position; gentleman or lady.
  • grownup — a mature, fully grown person; adult.

adjective adult

  • mature — complete in natural growth or development, as plant and animal forms: a mature rose bush.
  • grown-up — having reached the age of maturity.
  • grown — advanced in growth: a grown boy.
  • full-grown — completely grown; mature.
  • developed — If you talk about developed countries or the developed world, you mean the countries or the parts of the world that are wealthy and have many industries.

Antonyms for adult

noun adult

  • adolescent — Adolescent is used to describe young people who are no longer children but who have not yet become adults. It also refers to their behaviour.
  • infant — a child during the earliest period of its life, especially before he or she can walk; baby.

adjective adult

  • immature — not mature, ripe, developed, perfected, etc.

Top questions with adult

  • how many teeth do adult have?
  • how many teeth does adult have?
  • how many teeth does an adult have?
  • how adult are you?
  • how many teeth do an adult have?
  • how many bones are in the adult human body?
  • how to be an adult?
  • how to adult?
  • how to make friends as an adult?

See also

Matching words

Was this page helpful?
Yes No
Thank you for your feedback! Tell your friends about this page
Tell us why?