1. the quality or state of being hateful; intense dislike or animosity
2. the quality of being extremely unpleasant or objectionable

Examples

• The hatefulness in his voice was unmistakable when he spoke about his rival.
• She was shocked by the hatefulness of the comments posted online.
• The hatefulness of racism has caused immeasurable harm throughout history.
• He expressed his hatefulness toward the new policy in a heated letter.
• The hatefulness of the villain's actions drove the plot forward.
• Despite the hatefulness between them, they had to work together on the project.