Adult: Definition, Meaning, and Examples

Last Updated on
January 18, 2025

1. Adult (noun): A person who has reached the age of maturity, typically recognized as 18 years or older.
2. Adult (adjective): Characteristic of a grown individual, often denoting maturity or sophistication.
3. Adult (noun): A mature animal, no longer in its juvenile stage.

The term "adult" refers primarily to individuals or animals who have reached full growth or maturity, whether in terms of physical, mental, or social development. It can indicate an individual’s eligibility for certain rights and responsibilities, often associated with adulthood, such as voting or financial independence. Continue reading to uncover the various nuances of "adult."

"Adult" Definition: What Does "Adult" Mean?

"Adult" holds multiple definitions across contexts, from a legal status to a descriptor of maturity. Below are explanations of its most common uses.

Definition of "Adult": Legal Status

An adult is recognized legally as someone who has attained the age of majority, allowing for full participation in civic responsibilities and personal autonomy.

Definition of "Adult": Descriptor of Maturity

The term can also describe behavior or attributes associated with maturity, such as sophisticated taste, emotional stability, and responsible decision-making.

Parts of Speech

"Adult" functions as both a noun and an adjective. As a noun, it refers to a person or animal who has reached full growth. As an adjective, it describes qualities or characteristics associated with maturity or sophistication.

How to Pronounce "Adult"?

The word "adult" can be pronounced in two main ways, with the emphasis either on the first or second syllable.

When the emphasis is on the first syllable, it sounds like "AD-ult," where the "a" is pronounced like the short "a" in "cat." In this case, the word has a clear, strong first syllable.

In the second common pronunciation, the emphasis is on the second syllable, sounding like "uh-DULT," with the first part softer and almost blending into the second. Both pronunciations are commonly used, with personal or regional preferences often guiding which version people choose.

Phonetic Pronunciation: /ə-dŭlt′, ăd′ŭlt/ 

Synonyms of "Adult": Other Ways to Say "Adult"

Here are several synonyms for the term "adult":

  • Grown-up
  • Mature
  • Fully grown
  • Developed
  • Responsible
  • Sophisticated

Antonyms of "Adult": Other Ways to Say "Adult"

The following words can be considered antonyms of "adult":

  • Child
  • Juvenile
  • Adolescent
  • Immature
  • Youngster

Examples of "Adult" in a Sentence

Below are examples demonstrating the term "adult" in various contexts:

  1. As an adult, she finally took responsibility for her own actions.
  2. The movie is suitable only for adult audiences.
  3. He reached adult size by the age of eighteen.
  4. Many teenagers aspire to be treated as an adult.
  5. Her taste in fashion has become more adult over the years.
  6. At the zoo, the adult lions were separated from the cubs.
  7. Learning new skills is part of becoming an adult.
  8. The restaurant offers a separate adult dining area.
  9. Only adults are allowed to sign legal contracts.
  10. She felt like a real adult when she moved into her own apartment.

Frequency of Use

"Adult" is a common English word, ranking within the top 2,000 words in terms of usage frequency. Its prevalence reflects adulthood as a fundamental concept across contexts. Data shows its use has steadily increased over the past century.

Variants of "Adult"

Different forms and variants of "adult" include the following:

  1. Adulthood: The state of being an adult.
  2. Adulting: Informal term describing the actions or responsibilities associated with being an adult.

Related Terms to "Adult"

Here are terms closely related to "adult":

  1. Grown-up
  2. Maturity
  3. Responsibility
  4. Adolescence

Etymology: History and Origins of "Adult"

The word "adult" entered English in the 15th century, adapted from the Latin word "adultus" meaning "grown up" or "mature." It derives from "adolescere" meaning "to grow into maturity." Its definitions relating to sexual maturity and pornographic content arose in the 1970s. The core meaning of full growth has endured over centuries.

Derivatives and Compounds of "Adult"

Listed below are derivatives and compounds associated with "adult" that expand on the term’s meaning and usage in various contexts:

  1. Adult education: Programs or classes designed specifically for mature learners, often focusing on career advancement or personal development.
  2. Adult-oriented: Content, activities, or materials primarily intended for mature audiences, often due to complexity or appropriateness.
  3. Adult life: The period in one’s life after reaching maturity, encompassing responsibilities and independence.

Common Misspellings of "Adult"

Common misspellings of the word "adult" include:

  1. Addult
  2. Adutl
  3. Adault

10 Idioms Similar to "Adult"

Here are idioms that relate to the concept of being an adult or maturity:

  1. Come of age
  2. Take responsibility
  3. Step up to the plate
  4. Act one’s age
  5. Grow up
  6. Wear the pants
  7. Be mature beyond one’s years
  8. Shoulder the burden
  9. Stand on one’s own feet
  10. Show maturity

10 Common Questions About "Adult"

Here are frequently asked questions regarding "adult":

1. What age is considered an "adult"?

In most countries, 18 is the legal age of adulthood.

2. Does "adult" only refer to humans?

No, "adult" can also describe fully grown animals.

3. What does "adulting" mean?

"Adulting" is an informal term describing responsibilities associated with adulthood.

4. Is there a difference between an "adult" and a "grown-up"?

Both terms are similar, but "grown-up" is often more informal and used with children.

5. Why are some movies labeled "adult" content?

"Adult" content typically refers to material intended only for mature audiences.

6. Can someone be an "adult" at 16?

In some cultures, 16 may mark adulthood, but in most places, 18 is the recognized age.

7. What does "young adult" mean?

"Young adult" usually describes individuals in their late teens to early twenties.

8. Is "adult" always related to age?

Not always; "adult" can also describe mature behavior or content.

9. How is "adult" different from "adolescent"?

An "adult" has reached full maturity, while an "adolescent" is still developing.

10. Are there specific legal rights tied to being an "adult"?

Yes, reaching adulthood often grants rights like voting, signing contracts, and more.

Conclusion

The word "adult" describes a person or animal that has reached full maturity, symbolizing responsibility, growth, and independence. Its uses span social, legal, and biological contexts, reflecting the significant milestones of development and accountability. Embrace "adult" in your vocabulary to capture these essential qualities and stages of growth.

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