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adult Synonyms

Another word for adult

Choosing another word for adult depends on context, so the 22 synonyms and similar words below are separated across 5 exact definitions and ranked by match strength.
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• noun (Context 1)

A human being who is fully grown and developed, or who has reached the legal age of majority.

Usage Example

"Children must be accompanied by a responsible grown-up at all times while visiting the museum."

Strongest
grown-up
Strong
man
woman

• adjective (Context 2)

Fully grown and developed; having reached physical or legal maturity.

Usage Example

"The literacy program offers evening classes specifically designed for full-grown learners."

Strongest
full-grown
grown-up
grown
mature
Strong
of age
developed

• adjective (Context 3)

Characteristic of or suitable for mature persons; demonstrating emotional and intellectual maturity.

Usage Example

"They sat down to have a calm, mature conversation about how to divide the household expenses."

Strongest
mature
grown-up
Strong
sensible
responsible
levelheaded
sophisticated
rational

• noun (Context 4)

An animal or plant that has reached full growth and reproductive maturity.

Usage Example

"While the larvae feed exclusively on leaves, the adults subsist mainly on flower nectar."

Strong
imago

• adjective (Context 5)

Intended exclusively for mature audiences and unsuitable for children, especially due to sexually explicit or graphic content.

Usage Example

"The streaming platform requires a passcode to access films with mature themes."

Strongest
mature
explicit
x-rated
Strong
r-rated
pornographic
erotic
graphic
risqué
blue

Opposites of adult

The opposite of adult shifts depending on context. Common opposites include:

child
immature
minor
juvenile
childish
underage
family-friendly
g-rated
See all opposites of adult

Cite this Entry


Wordmom. (2026). Synonyms for Adult. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/synonyms/adult
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