immature

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

“They are so delightfully immature that I felt like they were my cousins,” he says.

From Los Angeles Times • Apr. 7, 2026

The market for investment in carbon removals remains immature, however.

From The Wall Street Journal • Mar. 26, 2026

Sticky buns feel immature once you have said korvapuusti.

From Salon • Mar. 8, 2026

The result is a man who is emotionally immature, dishonest and unable to take responsibility.

From MarketWatch • Mar. 3, 2026

“I think ‘babysitting’ sounds a little immature, you know?

From "South of Somewhere" by Kalena Miller