immature

American  

[im-uh-choor, -toor, -tyoor, -chur] / ˈɪm əˈtʃʊər, -ˈtʊər, -ˈtyʊər, -ˈtʃɜr /

adjective

1. not mature, ripe, developed, perfected, etc.

2. emotionally undeveloped; juvenile; childish.

   Synonyms:

   babyish, puerile, callow

3. Physical Geography. youthful.

4. Archaic. premature.

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immature British  

/ -ˈtʃʊə, ˌɪməˈtjʊə /

adjective

1. not fully grown or developed

2. deficient in maturity; lacking wisdom, insight, emotional stability, etc

3. geography a less common term for youthful

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Other Word Forms

• immaturely adverb
• immatureness noun
• immaturity noun

Etymology

Origin of immature

First recorded in 1540–50, immature is from the Latin word immātūrus unripe, hence, untimely. See im- ², mature

Example Sentences

This could be especially damaging for the lower-tier makers as their ecosystems are immature, and the foundry capacity and memory-chip supplies that they can secure is significantly lower, the analysts note.

From The Wall Street Journal

The study also highlighted several genes that appear to coordinate the shift back to an immature cell state.

From Science Daily

Inside the thymus, immature T cells go through a checkpoint process that helps create a diverse set of T cells.

From Science Daily

This is also where policymakers can make the biggest difference: providing the money and incentives to develop or commercialize immature technologies such as carbon capture and storage, advanced nuclear power, geothermal energy and hydrogen.

From The Wall Street Journal

Outside of that, they can read as unprofessional or immature.

From The Wall Street Journal

Related Words

• childish
• premature