infantile

• 与婴儿或幼儿有关的，或像婴儿的；常比喻不成熟、幼稚的行为。

Relating to or resembling an infant or young child; often used figuratively to describe immature or childish behavior.

1. Lacking maturityB2formal

   Showing or suggesting a lack of emotional or intellectual development; childish.

   幼稚的

   • His infantile behavior during the meeting embarrassed everyone.
   • She dismissed his argument as infantile and irrelevant.
   • The movie's humor was too infantile for an adult audience.

   同义词babyishchildishimmaturejuvenilepuerile

   反义词adultdevelopedgrownupmature

2. Relating to infancyB2formalmedical

   Of or relating to infants or the earliest stage of life.

   婴儿期的

   • The doctor specializes in infantile diseases.
   • Infantile development is a critical period for learning.
   • The study focused on infantile nutrition and growth.

   同义词babybabyishchildishchildlikeimmatureinfantjuvenilepuerile

   反义词adultelderlymature

3. Characteristic of an infantB2formal

   Being or befitting the qualities or appearance of a very young child.

   婴儿般的

   • The baby's infantile smile melted everyone's heart.
   • He still has an infantile fascination with bright colors.
   • Her voice had an infantile quality that was endearing.

   同义词babyishchildlike

   反义词adultgrownupmature