μιαιφόνος
From LSJ
ἀσκεῖν περὶ τὰ νοσήματα δύο, ὠφελεῖν ἢ μὴ βλάπτειν → strive, with regard to diseases, for two things — to do good, or to do no harm | as to diseases, make a habit of two things — to help, or at least, to do no harm
English (LSJ)
ον, (parox.)
A bloodthirsty, murderous, in Il. always epith. of Ares, 5.31, 455, 844, al.: coupled with θρασύχειρ, B.Scol.Oxy.5.1; μ. μύσος pollution of murder, E.Andr.335: c. gen., μ. τέκνων murderess of thy children, Id.Med.1346: Comp. -ώτερος Hdt.5.92.ά, E.Med.266: Sup. -ώτατος Id.Tr.881. Adv. μῐαιφόν-νως Memn. 1.4: Sup. -ώτατα D.C.79.3.