Definitions

immature

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

ADJECTIVE

young, inexperienced

Synonyms

STRONGEST

childish premature

STRONG

green unfledged unripe

WEAK

adolescent baby babyish callow crude half-grown imperfect infantile infantine jejune juvenile kid kidstuff puerile raw sophomoric tender tenderfoot underdeveloped undergrown undeveloped unfinished unformed unseasonable unseasoned unsophisticated untimely wet behind ears youthful

Antonyms

STRONGEST

mature

WEAK

adult developed experienced grown old

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.

Instead, it releases unusually large and immature cells that carry oxygen less effectively around the body.

From Science Daily • Jun. 25, 2026

In 1994, even an immature U.S. side stepped up enough to beat Colombia in the group stage and reach the second round.

From The Wall Street Journal • Jun. 19, 2026

Sure, some immature viewers might have glommed onto the edgy comedy of yesteryear.

From Salon • Jun. 11, 2026

"When they're under 16, they're far too immature to deal with these massive issues that us as adults struggle with."

From BBC • May 25, 2026

But in recent years these immature birds have become a rarity.

From "Silent Spring" by Rachel Carson

Vocabulary lists containing immature

List 5

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Brown Girl Dreaming

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Made You Look: Synonyms for "Immature"

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