immature
/ɪməˈtjʊə(ɹ)/adjective, noun
immature is spelled I-M-M-A-T-U-R-E: 8 letters and 3 syllables. It appears 4.6 times per million words in written English, the 11,870th most frequent word form (wordfreq, 2021 data). As an adjective, immature means “Not fully formed or developed; not grown” (English Wiktionary, September 2026).
How many letters and syllables are in immature?
| Letters | 8: I-M-M-A-T-U-R-E |
|---|---|
| Syllables | 3 (from its American pronunciation) |
| In writing | 4.6 times per million words; the 11,870th most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation and the CMU Pronouncing Dictionary; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is immature?
Immature appears 4.6 times per million words in written English, the 11,870th most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce immature?
- /ɪməˈtjʊə(ɹ)/
- /ɪməˈt͡ʃʊə(ɹ)/
- /ɪməˈt͡ʃə(ɹ)/
Immature has 3 syllables (counted from its American pronunciation in the CMU Pronouncing Dictionary).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Vealhurl-immature.wav, Wikimedia Commons (author and licence on each file's page).
Forms of immature
- more immature comparative
- most immature superlative
- immatures plural
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does immature mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adjective
- 1
archaicOccurring before the proper time; untimely, premature (especially of death).
- 2
Not fully formed or developed; not grown.
- 3
Childish in behavior; juvenile.
You're only young once, but you can be immature the rest of your life.
noun
- 1
An immature member of a species.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Immature in Spanish, French, German and Portuguese
| Language | Words |
|---|---|
| French | immature, vert |
| German | unreif , kindisch |
| Portuguese | imaturo , infantil |
| Spanish | inmaturo , inmaduro, aniñado, pueril, infantil |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does immature come from?
From Middle French immature. Partially displaced unripe, from Old English unrīpe (“unripe, immature”).
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).