Superb(noun)
Marked to the highest degree by grandeur, excellence, brilliance or competence
https://www.merriam-webster.com/dictionary/superb
In “Reading Lucy” by Jennifer Egan, the author says, “When it came to life in the navy yard around the job, Lucy was superb. “I just learned of a wonderful way to lose friends and get a lot of laughs or do you already know the funnel trick?” she wrote in an undated letter.
This means that Lucy was excellent at her job at the navy yard, she knows how to do it well
