The phrase "young upstart" refers to a person, often young, who is ambitious and eager to succeed, sometimes seen as arrogant or disrespectful to established figures. Full definition
Moving to Manhattan in 1978, he took up with the city's downtown bohemian crowd, hobnobbing with young upstarts like Keith Haring, Kenny Scharf, Madonna and Jean - Michel Basquiat. (nytimes.com)
Hailee Steinfeld, the Academy Award - nominated young upstart from True Grit is one of the more believable parts of the proceedings as the troubled teen of a broken home who wants to bond with her absentee father but does not want to show the weakness of asking for it (though even her character is not safe from cliche by act three). (alphaprimitive.com)
Lately, Cianciolo has modeled for young upstarts with a conceptual bent, such as Eckhaus Latta and Maryam Nassir Zadeh, and this past spring, she revived RUN Restaurant, this time in a much grander space — Untitled, the restaurant at the Whitney, as part of the museum's Biennial programming. (interviewmagazine.com)