Correct spelling for the English word "Confessant" is [kənfˈɛsənt], [kənfˈɛsənt], [k_ə_n_f_ˈɛ_s_ə_n_t] (IPA phonetic alphabet).
One who confesses to a priest.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.