What is the Opposite(Antonym) of “infantile”?

The Opposite(Antonym) of “infantile”

The antonyms of infantile are mature, adult, and grown-up. These antonyms describe a more developed, responsible, and sophisticated state of being.

Explore all Antonyms of “infantile”

Definitions and Examples of mature, adult, grown-up

Learn when and how to use these words with these examples!

Fully developed physically, mentally, or emotionally; having reached a state of full growth or maturity.

Example

She showed a mature attitude by taking responsibility for her actions.

A person who has reached the age of majority and is legally responsible for their actions; fully grown or developed.

Example

As an adult, he had to make his own decisions and take care of himself.

grown-up

A person who is fully developed physically, mentally, or emotionally; mature.

Example

She acted like a grown-up by handling the situation calmly and responsibly.

Key Differences: mature vs adult vs grown-up

  • 1Mature refers to a state of full development, while adult and grown-up refer to a legal and social status of being fully responsible for one's actions.
  • 2Adult is a noun that describes a person who has reached the age of majority, while grown-up is an adjective that describes a person who is fully developed.
  • 3Grown-up is a more informal term than adult and can be used to describe someone who is mature in behavior and attitude.

Effective Usage of mature, adult, grown-up

  • 1Professional Communication: Use mature to describe professional behavior and attitude.
  • 2Legal Context: Use adult to describe a person's legal status as a responsible individual.
  • 3Everyday Conversation: Use grown-up to describe someone who is mature in behavior and attitude, but in a more casual context.
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Remember this!

The antonyms of infantile describe a more developed, responsible, and sophisticated state of being. Use mature to describe professional behavior and attitude, adult to describe a person's legal status as a responsible individual, and grown-up to describe someone who is mature in behavior and attitude in a more casual context.

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