We don't have synonyms for responsion yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are responsive, sponsion and respersion.
(n) :
(UK, education, historical, in the plural) The first of three examinations once required for an academic degree at the University of Oxford; nicknamed the little go and generally taken around the time of matriculation.
(n) :
(UK, education, historical, in the plural) The first of three examinations once required for an academic degree at the University of Oxford; nicknamed the little go and generally taken around the time of matriculation.