εὐθενία
From LSJ
πολλὰ τὰ δεινὰ κοὐδὲν ἀνθρώπου δεινότερον πέλει → many things are formidable, and none more formidable than man | wonders are many, and none is more wonderful than man | many things are bad, but nothing is more atrocious than man
English (LSJ)
ἡ, A = εὐθένεια ΙΙ (q.v.), from which it cannot be distd. after ii B.C.: Ion. εὐθενίη () Epigr. in Rev.Phil.19.178 (i B.C.), Epigr.Gr.1036.19 (Nicomedia); εὐθενία is v.l. in Arist. Rh.1360b16, HA602a15 (v.l. εὐσθένεια, εὐθένεια), Porph. Gaur.16.2.—From ii A.D. εὐθένεια and εὐθενία begin to be confused with εὐθηνία.