Correct spelling for the English word "Smoterlich" is [smˈə͡ʊtəlˌɪx], [smˈəʊtəlˌɪx], [s_m_ˈəʊ_t_ə_l_ˌɪ_x] (IPA phonetic alphabet).
Dirty; foul.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.