expo

Expo is an abbreviation for 'exponentially' and signifies something infinitely positive. Just as the exponential function ascends boundlessly, 'expo' conveys an essence of limitless growth to extreme positive. Additionally, it can serve as a negative descriptor, exemplified by 'unexpo.' This term denotes the antithesis of 'expo,' employed to characterize unfavorable aspects, which are infinitely negative.

Your volleyball serve today was really expo.
The style of this dude is so expo.

Today I'm feeling really unexpo.
If I fail this test the conversation with my parents will be so unexpo.