The phrase "give black eye" refers to physically injuring someone's eye area. The opposite of this violent action would be to show kindness and compassion towards others. Some synonyms for this could be to give a compliment, show appreciation, or lend a helping hand. The use of encouraging words or specific actions, such as donating to charity or volunteering, can prevent the need for any form of aggression. Violence and harm have no place in society, and we should strive to promote peace and positivity in our everyday interactions.