Laycock classified Morwap as an isolate, but noted pronominal similarities with Border.
[1] The Border languages are:[2] Awyi Taikat Manem Ainbai Pagi Kilmeri (Mbo) Sowanda (Waina) Punda Umeda Amanab Auwe-Daonda Imonda Waris Morwap (Elseng) Senggi (Viid) Usher does not mention Ningera, subsuming it into another language.
[1] Border family cognates (Awyi, Taikat, Kilmeri, Waris, Imonda) listed by Foley (2018):[1] The following basic vocabulary words are from Voorhoeve (1971, 1975),[3][4] as cited in the Trans-New Guinea database.
[5] The words cited constitute translation equivalents, whether they are cognate (e.g. mogor, moŋla, moŋgola for “leg”) or not (e.g. nakan, past, bosok for “nose”).
[6] The Pagei, Bewani, Bo, and Ningera peoples expanded down the Pual River to displace speakers of Inner Skou and Serra Hills languages.