怯懦to be afraid; to be timid

• 他看见前面有几条恶狗，心里感到有些害怕

  up ahead he caught sight of several vicious dogs and felt a bit afraid

• 他第一次上台发言时，心里感到有些害怕。

  The first time he got up on stage to make a speech he felt a bit scared.

• 如果一个人害怕批评，他就不会有进步。

  If someone is afraid of criticism then they will not be able to improve.