https://www.merriam-webster.com/dictionary/adult
Jun 17, 2026 · The meaning of ADULT is fully developed and mature : grown-up. How to use adult in a sentence.
https://en.wikipedia.org/wiki/Adult
In contrast to a non-adult or "minor", a legal adult is a person who has attained the age of majority and is therefore regarded as independent, self-sufficient, and responsible.
https://dictionary.cambridge.org/us/dictionary/english/adult
An adult under English law is someone over 18 years old. Adults pay an admission charge but children get in free.
https://www.vocabulary.com/dictionary/adult
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 suga
https://www.thefreedictionary.com/adult
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 movie
https://www.dictionary.com/browse/adult
ADULT definition: a person who is fully grown or developed or of age. See examples of adult used in a sentence.
https://dictionary.cambridge.org/dictionary/english/adult
An adult under English law is someone over 18 years old. Adults pay an admission charge but children get in free.
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https://www.wordreference.com/definition/adult
(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 al
https://www.oxfordlearnersdictionaries.com/definition/american_english/adult_1
Definition of adult noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.