Part-of-Speech: Unassigned
Inflection: Indeclinable = Indeclinable word (preposition, conjunction, ...)
Streitberg 1910, p. 7211
jau (d.i. ja-u, 75.2) Fragepart. 1. [in direkter Frage] ob? [verneinende Antwort erwartend (328,1)] 2. [In indirekter Frage] ob