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  1. Adult - Wikipedia

    In the human context, the term adult has meanings associated with social and legal concepts. In contrast to a non-adult or "minor", a legal adult is a person who has attained the age of …

  2. ADULT Definition & Meaning - Merriam-Webster

    The meaning of ADULT is fully developed and mature : grown-up. How to use adult in a sentence.

  3. ADULT | English meaning - Cambridge Dictionary

    An adult under English law is someone over 18 years old. Adults pay an admission charge but children get in free.

  4. ADULT Definition & Meaning | Dictionary.com

    What does adult mean? An adult is a person who is fully grown or developed. This could refer to a person’s body being done growing or their mind being fully developed. An adult child is …

  5. Adult - Definition, Meaning & Synonyms | Vocabulary.com

    Adult is noun and an adjective, both of which refer to something mature, no longer a child. A full-grown person is called an adult: they can vote, rent cars, and choose to eat sugary cereal for …

  6. Adult - definition of adult by The Free Dictionary

    1. Fully developed and mature. 2. Relating to, intended for, or befitting adults: adult education. 3. Containing or dealing in explicitly sexual material; pornographic: adult movies. [From Latin …

  7. adult noun - Definition, pictures, pronunciation and usage notes ...

    Definition of adult noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

  8. adult, adj. & n. meanings, etymology and more | Oxford English …

    Factsheet What does the word adult mean? There are nine meanings listed in OED's entry for the word adult. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

  9. adult - WordReference.com Dictionary of English

    (intransitive) informal to live or behave like an adult, esp by being responsible and independent Etymology: 16th Century: from Latin adultus, from adolēscere to grow up, from alēscere to …

  10. adult - Wiktionary, the free dictionary

    Sep 23, 2025 · Containing material of an explicit sexual nature; pornographic. This program contains adult content. Parental discretion is advised. Containing excessive vulgar or profane …