(US) The second in a series, especially, the second of an artist’s albums or the second of four years in a high school (tenth grade) or university. / Sophomoric.

(US, Philippines) A second-year undergraduate student in a college or university, or a second-year student in a four-year secondary school or high school. / (US, horse-racing) A three-year-old horse.

plural of sophomore

of, relating to, or characteristic of a sophomore / conceited and overconfident of knowledge but poorly informed and immature / pretentious; inflated in style or manner

In a sophomoric way.

sophomoric

plural of sophomore slump

(Canada, US) The situation where a second effort fails to live up to the relatively high standards of the first.