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Definitions

adult

[uh-duhlt, ad-uhlt] / əˈdʌlt, ˈæd ʌlt /
ADJECTIVE
being mature, fully grown
Synonyms
Antonyms


NOUN
a mature, fully grown person
Synonyms
STRONGEST
STRONG
grownup
WEAK
Antonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

When Limited Too relaunched at Kohl’s in 2024, millennials flooded the comments demanding adult sizes, furious that the comeback was for actual tweens.

From The Wall Street Journal • Apr. 20, 2026

One year, I hosted an adult field day at the park with sack races, water balloons and snow cones, so I have some fun ideas for you.

From Los Angeles Times • Apr. 20, 2026

While adult women still have about the same number of babies they used to, some are having them a little later in life than in the past.

From Salon • Apr. 20, 2026

The Prince of Wales, now a popular watering hole of choice for thousands of thirsty Six Nations supporters, was previously a theatre and even an adult cinema.

From BBC • Apr. 18, 2026

I clean up okay, as every adult likes to say when a kid puts in the slightest effort.

From "Popcorn" by Rob Harrell




Vocabulary lists containing adult