O çok olgunlaşmamış görünüyor.
- She sounds very immature.
Ben o zaman genç ve olgunlaşmamıştım.
- I was young and immature at the time.
Bu çocuklar çok gelişmemiş.
- These guys are very immature.
They may be approaching 40, but after three beers they are behaving as immaturely as any teenager.
He immaturely chose the sports car instead of the money.