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