immature

• 形容某人或某物尚未完全发育或成长；也常用来形容幼稚、不成熟的行为。

Describes someone or something that is not fully developed or grown; often used to describe childish behavior.

1. Lacking emotional or mental growthA2formal

   Acting in a way that is not typical of an adult, especially with childish behavior or lack of responsibility.

   不成熟

   • His immature reaction surprised everyone.
   • She made an immature comment about the situation.
   • Crying over a spilled drink seems immature.

   同义词babyishchildishinfantilejuvenilepuerile

   反义词adultgrownupmature

2. Early stage of life or developmentB1formal

   Referring to the early period of growth or development in a living thing, before full adulthood.

   未成熟的

   • The immature plants need extra care.
   • These cells are still immature and will divide.
   • Immature animals rely on their parents for food.

   同义词adolescentbuddingembryonicgreeninfantjuvenileundevelopedunripeyoung

   反义词adultdevelopedfull-grownmature

3. Not fully developed or ripeB1formal

   Not yet complete in growth; not ready for use or consumption.

   未成熟的

   • The fruit is still immature and tastes sour.
   • Immature wood is weaker than aged timber.
   • The decision was based on immature analysis.

   同义词embryonicgreenjuvenilenascentprematureundevelopedunripeyoung

   反义词adultdevelopedgrownmatureripe

4. Not yet mature (general)B1formal

   Describing something that has not yet reached its full size, strength, or capacity.

   未成熟的

   • The immature bird cannot fly yet.
   • Our plans are still immature and need refinement.
   • Immature ideas often evolve over time.

   同义词callowgreenjuvenileundevelopedunfledgedunripeyoung

   反义词adultdevelopedfull-grownmatureripe

5. Of birds: without feathersC1formalscientific

   Describing a young bird that has not yet grown its feathers.

   未长羽毛的

   • The nest held three immature chicks.
   • Immature birds often have fluffy down.
   • Ornithologists studied the immature plumage.

   同义词callowfeatherlessunfeatheredunfledged

   反义词featheredfledged