Negativity (noun)

1. A negative attitude, disposition, or outlook.
2. The state of being negative or characterized by negative traits.

Origin:

Derived from the latin word 'negativus' meaning 'negative'.

Examples:

1. The negativity of the person affected the morale of the team.
2. The negativity of the critics was countered by the positive feedback from the audience.
3. The negativity of the situation was addressed by the efforts of the leaders.
4. The negativity of the comments was not appreciated by the speaker.
5. The negativity of the atmosphere was dispelled by the laughter of the children.