κακεργέτις
From LSJ
νέῳ δὲ σιγᾶν μᾶλλον ἢ λαλεῖν πρέπει → it's fitting for a young man to keep silence rather than to speak (Menander)
English (LSJ)
ιδος, ἡ, Herm.in Phdr.p.75 A. (written κακοεργέτις Porph.Antr.30, s.v.l.):—also κακεργάτις [ᾰ], Them.Or.2.33d.
German (Pape)
[Seite 1298] ιδος, ἡ, fem. zum Vorigen, Sp.