immatureness

/ˌɪməˈtʃʊrnəs/
noun
  1. The quality or state of being not fully grown or developed.
    • The immatureness of the fruit made it too sour to eat.
    • The puppy's immatureness was clear from its clumsy movements.
    • Scientists studied the immatureness of the coral reef ecosystem.
  2. Behavior that is childish or not responsible.
    • His constant immatureness frustrated his coworkers.
    • She eventually outgrew her immatureness and became a reliable leader.
    • The team's immatureness led to many avoidable mistakes.
Antonyms
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