supersenior /ˈsupɚˌsinjɚ/noun 2adjective 1forms 1 noun2 •(US, Philippines) A university or secondary school student who is in their fifth year of secondary education or postsecondary education without having graduated. •Having high-quality financial paper with very low risk exposure. adjective1 •Of a status higher than that of a senior lender. formssuperseniors