From debutante + -tard.
debutard (plural debutards)
- (slang, derogatory) A young, wealthy person (especially a girl or woman) lacking in intelligence or common sense.
2008, Brian K. Vaughan, Georges Jeanty, & Joss Whedon, Buffy the Vampire Slayer: No Future for You[1], Dark Horse Books, →ISBN:I thought this stuck-up debutard lived in Jolly Olde.
2009, Gigi Levangie Grazer, Queen Takes King, Simon & Schuster, →ISBN, page 207:The “scions,” “children of,” the “debutards,” the boys who worked at art galleries their parents owned, the girls who worked at Christie's and Sotheby's while awaiting their spread in a fashion monthly.
2010, Maureen Johnson, Scarlett Fever[2], Point, →ISBN:WE LOVE A DEBUTARD WEDDING...as much as anyone else. Probably more than most. We love the spectacle of New York's richest and dumbest making the tie that binds.