Correct spelling for the English word "not countenances" is [nˌɒt kˈa͡ʊntənənsɪz], [nˌɒt kˈaʊntənənsɪz], [n_ˌɒ_t k_ˈaʊ_n_t_ə_n_ə_n_s_ɪ_z] (IPA phonetic alphabet).
The word "countenance" originates from the Old French term "cointe(n)ance", which came from the Latin word "contenēre", meaning "to hold together" or "to sustain". In Middle English, it was commonly spelled as "countenaunce" or "conntenaunce".
The prefix "not-" simply negates or reverses the meaning of the word it is attached to. Therefore, "not countenances" means the opposite of "countenances", which refers to expressions, faces, appearances, or attitudes.