What is the meaning of Immature?

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

Not fully formed or developed; not grown.

Childish in behavior; juvenile.

An immature member of a species.

immature, unripe

inflection of immatur:

  1. strong/mixed nominative/accusative feminine singular
  2. strong nominative/accusative plural
  3. weak nominative all-gender singular
  4. weak accusative feminine/neuter singular

strong/mixed nominative/accusative feminine singular

strong nominative/accusative plural

weak nominative all-gender singular

weak accusative feminine/neuter singular

feminine plural of immaturo

vocative masculine singular of immātūrus

Source: wiktionary.org