Comments:Poppe 24, KW 155, ОСНЯ 1, 234, АПиПЯЯ 291. "Verbal" low tone in Korean. There are several "mental" verbs of the type KUNV in Altaic, and they are not always easy to distinguish from each other. Besides *gū̀no 'think' cf. also notes to *kḕńu 'distress, envy', *k`i̯ŭnu 'to long, covet', *k`i̯ū́ńa 'punishment' (the latter - with additional analogies with *guna 'attack, torture'). On the whole this produces an extremely complicated etymological situation, and we are not sure we have disentangled everything correctly.