adj · noun · 9 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.
/ɪməˈtjʊə(ɹ)/
/ɪməˈt͡ʃʊə(ɹ)/
/ɪməˈt͡ʃə(ɹ)/
Southern-England:Recorded audio is listed in the source snapshot.
rhymes with -ʊə(ɹ)
CMU ARPABET:IH2 M AH0 T Y UH1 R
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Occurring before the proper time; untimely, premature (especially of death).
Definition source: English Wiktionary via Wiktextract
Usage: archaic
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
adj
Meaning 2
Not fully formed or developed; not grown.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
adj
Meaning 3
Childish in behavior; juvenile.
Definition source: English Wiktionary via Wiktextract
Examples
You're only young once, but you can be immature the rest of your life.
The man was immature for throwing a tantrum.
Wilhelm Stekel - As quoted in The Catcher in the Rye (1951) by J. D. Salinger. The mark of the immature man is that he wants to die nobly for a cause, while the mark of a mature man is that he wants to live humbly for one.
