She always has a sense of superiority over others.

He always belittles others because he has a superiority complex.

She is the smartest person I know.

He gave a superlative perfomance on the piano.

She sang superlatively well.

Superman is a fictional superhero.

The supernal beauty of the night sky took my breath away.

She has always been fascinated by the supernatural.

A supernova is a powerful explosion that occurs during the last evolutionary stages of a massive star's life.

There are supernumerary staff members working in the office.