unkindness

noun3

1. •
   The state or quality of being unkind.

   • His unkindness earlier comes from his bad mood.
   • She shows her unkindness through her actions.
2. •
   An unkind act.

   • You have done me an unkindness with your cruel deeds.
3. •
   A flock of ravens or sometimes crows.

   • An unkindness of ravens spread across the sky.