ἀμνησιπόνηρος

From LSJ

τοῖς οἰκείοις βουλεύμασιν ἁλίσκεσθαι → hoist by one's own petard, hoist with one's own petard, hoist on one's own petard, hoisted by one's own petard, be hoist with one's own petard

Source

Spanish (DGE)

-ον
que olvida las ofensas, que perdona οἱ γὰρ πρὸς ἐχθροὺς ἀφιλάργυροι καὶ ἀ. Clem.Al.Strom.7.12.69.