General Antonyms:
* Generosity: The act of giving freely and unselfishly.
* Charity: The practice of giving money or help to those in need.
* Altruism: The belief that it is right to act in a way that will help others.
* Selflessness: Lack of concern for one's own comfort or well-being.
* Contentment: A state of happiness and satisfaction.
More Specific Antonyms:
* Frugal: Using money and resources carefully and wisely.
* Thrifty: Careful with money and resources.
* Unselfishness: Concern for others' well-being rather than one's own.
* Modesty: The quality of not being proud or boastful about one's achievements or possessions.
The best antonym will depend on the specific context in which you're using the word "avarice".