dastardliness
/ˈdæstərdlinəs/
noun
- Behavior that is cowardly, mean, and dishonest, especially when it involves betraying or harming someone in a sneaky way.
- Spreading false rumors about a coworker is an act of pure dastardliness.
- The villain's dastardliness was revealed when he abandoned his friends to save himself.
- The story shows how dastardliness can destroy trust between people.