mature
Americanadjective
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complete in natural growth or development, as plant and animal forms.
a mature rose bush.
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ripe, as fruit, or fully aged, as cheese or wine.
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fully developed in body or mind, as a person.
She was a mature woman who took her family responsibilities seriously.
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noting or pertaining to an adult who is middle-aged or older (used euphemistically).
discrimination against mature applicants.
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pertaining to or characteristic of full development.
a mature appearance; fruit with a mature softness.
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completed, perfected, or elaborated in full by the mind.
mature plans.
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(of an industry, technology, market, etc.) no longer developing or expanding; having little or no potential for further growth or expansion; exhausted or saturated.
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intended for or restricted to adults, especially by reason of explicit sexual content or the inclusion of violence or obscene language.
mature movies.
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composed of adults, considered as being less susceptible than minors to explicit sexual content, violence, or obscene language, as of a film or stage performance.
for mature audiences only.
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Finance. having reached the limit of its time; having become payable or due.
a mature bond.
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Medicine/Medical.
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having attained definitive form or function, as by maturation of an epithelium from a basal layer.
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having attained the end stage of a normal or abnormal biological process.
a mature boil.
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Geology. (of a landscape) exhibiting the stage of maximum topographical diversity, as in the cycle of erosion of a land surface.
verb (used with object)
adjective
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relatively advanced physically, mentally, emotionally, etc; grown-up
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(of plans, theories, etc) fully considered; perfected
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due or payable
a mature debenture
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biology
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fully developed or differentiated
a mature cell
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fully grown; adult
a mature animal
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(of fruit, wine, cheese, etc) ripe or fully aged
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(of a river valley or land surface) in the middle stage of the cycle of erosion, characterized by meanders, maximum relief, etc See also youthful old
verb
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to make or become mature
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(intr) (of notes, bonds, etc) to become due for payment or repayment
Usage
What does mature mean? If a person is mature, they act grown-up. If an animal is mature, it has reached adulthood. If a fruit is mature, it’s ripe. If a game or movie is intended for a mature audience, it means it’s for adults because it’s inappropriate for kids. Mature has many meanings in addition to the common ones above. It is most commonly used as an adjective, but it can also be a verb meaning to become mature or to make mature. Example: Some of my students are very mature and responsible, but the rest of them act like preschoolers.
Synonym Usage
See ripe.
Other Word Forms
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half-maturedadjective
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maturelyadverb
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maturementnoun
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maturenessnoun
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maturernoun
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nonmatureadjective
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nonmaturelyadverb
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nonmaturenessnoun
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overmatureadjective
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overmaturelyadverb
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overmaturenessnoun
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self-maturedadjective
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semimatureadjective
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semimaturelyadverb
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semimaturenessnoun
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unmatureadjective
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unmaturedadjective
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unmaturelyadverb
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unmaturingadjective
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well-maturedadjective
Etymology
Origin of mature
First recorded in 1400–50; late Middle English, from Latin mātūrus “ripe, timely, early”; akin to manes, matutinal
Explanation
Someone who is mature acts grown up, like an adult. However, when one sister says to another, "That's so mature," she's usually using the word sarcastically, because her sister has done something very immature, like sticking out her tongue. The adjective mature doesn't only describe advancing age, although the residents of a senior citizens' home could definitely be considered mature. Anything that is fully developed, like an aged cheese or bottle of wine, can also be called mature. The word can also refer to something that is only appropriate for people who are considered legal adults, like the movie that is for "mature audiences only."
Vocabulary lists containing mature
Ancient Wisdom: Synonyms for "Old"
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Guts
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Class Act
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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.
Stocks in the value camp are typically those of more mature companies that are growing slowly, and/or trade at low multiples to earnings or feature high dividend yields.
From MarketWatch • May 27, 2026
And once they mature more, they could take over from people working in software.
From Barron's • May 22, 2026
Among all the amino acids tested, cysteine produced the strongest regenerative effect on both stem cells and progenitor cells, which eventually mature into adult intestinal cells.
From Science Daily • May 21, 2026
The Creg y Cowin project is operating under a 100-year framework, with trees expected to take 50 to 75 years to mature.
From BBC • May 20, 2026
He was an even-tempered, soft-spoken, and mature grandmaster who represented the old guard, and over a lifetime of tournament warfare he’d played many of the game’s legendary figures.
From "Endgame" by Frank Brady
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
