Sophomoric
/sɑf(ə)ˈmɑɹɪk/
"Sophomoric" in a Sentence (3 examples)
The word "sophomoric," means juvenile or, as Merriam-Webster's dictionary puts it, "conceited and overconfident of knowledge but poorly informed and immature."
The editors agree with that “and make that puerile, sophomoric, and jejune too,” says Beard.
sophomoric affectation