An Etymological Dictionary of the German Language/Dusel

by Friedrich Kluge

Dusel, m., ‘dizziness,’ simply ModHG., from LG. dusel, ‘giddiness’; a genuine HG. word would have had an initial t, as OHG. tusig, ‘foolish,’ shows; the latter corresponds to AS. dysig, ‘foolish,’ E. dizzy. To the root dus (dhus) contained in this class, belong Thor, thöricht, with the genuine HG. t initially. A different gradation of the same root dus, from Aryan dhus, appears in AS. dwœ̂s, Du. dwaas, ‘foolish.’