debut
This word carries a sense of ceremony and anticipation. It is not just a start, but a formal introduction to a professional sphere or a public audience. It suggests a transition from a state of preparation or anonymity to one of public visibility and judgment.
Countable when referring to the specific event of a first appearance (e.g., a successful debut). Uncountable when discussing the general concept of entering a professional field.
Meanings
The first public appearance of a person or a first performance of a work.
"Her professional debut was a sold-out concert at the arena."
To perform or appear in public for the first time.
"The company will debut its new smartphone next month."
To make a first public appearance.
"The young pianist debuted in Vienna last year."