What does "immaturity" mean?

Youth; the condition of being immature or not fully grown

How do you pronounce "immaturity"?

Pronounced //ɪməˈt͡ʃʊɹɪti//.

Common synonyms include: adulteration, agerasia, amateurishness, amateurism, arrestment, babyishness.

/ɪməˈt͡ʃʊɹɪti/ noun

noun ·Moderate ·High school level

Noun

1
Youth; the condition of being immature or not fully grown countable, uncountable
"emotional immaturity"
2
not having reached maturity wordnet

"Let's resist the temptation to fall back on the same partisanship and pettiness and immaturity that has poisoned our politics for so long."

Borrowed from Latin immātūritātem.