Hostility (noun)

1. Feelings or attitudes of anger or dislike towards someone or something.
2. Aggression or unfriendliness shown towards someone or something.

Origin:

Derived from the latin word hostilitās, meaning 'enmity, hostility, opposition,'.

Examples:

1. The hostility between the two countries increased after the border dispute.
2. The hostility towards immigrants was palpable at the rally.
3. The hostility between the two players was evident on the field.
4. The workers showed hostility towards the new management policies.
5. She faced hostility from her classmates because of her race.