immature

1. Not fully formed or developed; not grown.

   unreif

   неспе́лыйnespélyj, незре́лыйnezrélyj

   not fully developed or mature; not ripe

2. Childish in behavior; juvenile.

   You're only young once, but you can be immature the rest of your life.

   The man was immature for throwing a tantrum.

   unreif, kindisch

   незре́лыйnezrélyj

3. (archaic)Occurring before the proper time; untimely, premature (especially of death).

1. Tom is immature.

   Том незрілий.

   deTom ist unreif.

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2. I think you've been very immature.

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3. I think that Tom is immature.

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4. Tom is too immature to do that.

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5. Tom is very immature for his age.

   deTom ist für sein Alter sehr unreif.

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regular