General Antonyms:
* Compliment: A polite expression of praise or admiration.
* Praise: To express approval or admiration for someone or something.
* Flattery: Excessive and insincere praise.
* Respect: High regard or admiration for someone or something.
* Kindness: The quality of being friendly, generous, and considerate.
More Specific Antonyms:
* Encouragement: Words or actions that give someone confidence or hope.
* Appreciation: The feeling of being grateful for something.
* Acceptance: The act of taking something willingly or without protest.
* Support: The act of helping someone or something.
The best antonym for "insult" will depend on the specific situation. For example, if someone is being insulted for their appearance, you might use "compliment" as an antonym. If someone is being insulted for their intelligence, you might use "praise" or "respect" as an antonym.