Correct spelling for the English word "enervis" is [ˈɛnəvˌɪs], [ˈɛnəvˌɪs], [ˈɛ_n_ə_v_ˌɪ_s] (IPA phonetic alphabet).
In bot., without nerves or veins.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.