Tüchtigkeit, competence, tüchtig, competent

Ἀρετή appears to be such an ἀγαθόν, the manner and mode of being-there [Dasein  ] that we speak of when we say that one is a competent fellow, “competence,” [Tüchtigkeit] the way of having the possibility of one’s own being at one’s disposal at each moment. The ἀρετή   of the flute player consists of having the possibility of flute playing at his disposal in a distinctive sense. Such a way of being and living can, however, sleep itself away in a certain sense. One can be competent [tüchtig], and still sleep one’s life away [Leben   verschlafen]. [GA18MT  :55]