Correct spelling for the English word "Conticent" is [kəntˈa͡ɪsənt], [kəntˈaɪsənt], [k_ə_n_t_ˈaɪ_s_ə_n_t] (IPA phonetic alphabet).
Silent.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.