Netherdutch

Etymology
From en, probably a or a.

Adjective

 * 1)  Dutch, pertaining to the Dutch language
 * 2)  Dutch, pertaining to the Netherlands or to Dutch people

Proper noun

 * 1)  Low German
 * 2) * letter by Strangford, in: Ten Letters to E. A. Freeman, Esq., in: 1878, Original Letters and Papers of the Late Viscount Strangford upon Philological and Kindred Subjects. Edited by Viscountess Strangford, p. 32:
 * But I have a deadly hatred of sch generally for a clumsy and newfangled corruption—it is either the older sc-, or it is the High Dutch way of pronouncing s followed by a consonant, [...] The Nether Dutch of Germany hasn't got it at all except as the representative of sc-, and that of Holland has kept the old pronunciation of sk, even though written sch, except as a termination, when I believe it is pronounced s. [...] and if the Germans, or rather Nether Dutchmen, of Sleswick have to become Danes in the long run, and to learn Danish at school, [...]
 * 1) * 1917, The Dutch Language, in: De nieuwe gids vol. 32.1, p. 982ff., here p. 984 :
 * But round about these, in a broken curve are found the represenatives of the Low-German (Nieder-Deutsch, Netherdutch or Netherlandish) family. Along the shores of the Baltic and far inland, where German [= (Standard) High German] is established in the educated ranks, the mass of the population speak Platt-deutsch, which is nothing but a form of Dutch, not German or Hoch-deutsch.
 * But round about these, in a broken curve are found the represenatives of the Low-German (Nieder-Deutsch, Netherdutch or Netherlandish) family. Along the shores of the Baltic and far inland, where German [= (Standard) High German] is established in the educated ranks, the mass of the population speak Platt-deutsch, which is nothing but a form of Dutch, not German or Hoch-deutsch.