debut

ˈdeɪbjuː
ˈdɛbjuː

noun

a person’s first appearance or performance in a particular capacity or role.

the film marked his debut as a director

first appearance,first showing,first performance,launch,launching,coming out,entrance,premiere,beginning,introduction,inception,inauguration,kick-off,commencement

verb

perform in public for the first time.

the Rolling Stones debuted at the Marquee