General Opposites:
* Generous: Focusing on giving and sharing rather than dwelling on small issues.
* Magnanimous: Forgiving and understanding, especially towards someone who has wronged you.
* Noble: Having high moral principles and behaving in a way that is considered honorable.
* Unselfish: Putting the needs of others before your own.
* Forgiving: Letting go of anger and resentment.
Specific to the context:
* Important: If "petty" is used to describe something trivial, the opposite could be something significant or meaningful.
* Grand: If "petty" is used to describe something small-scale or insignificant, the opposite could be something large-scale or impressive.
* Mature: If "petty" is used to describe someone's behavior as childish or immature, the opposite could be mature or grown-up.
It's important to consider the specific situation when choosing an opposite for "petty."