οἱ τοῖς πέλας ἐπιβουλεύοντες, λανθάνουσι πολλὰκις ὑφ' ἑτέρων τοῦτ' αὐτὸ πάσχοντες → when people plot against their neighbours, they fall victim to the same sort of plot themselves
horrible: P. and V. μιαρός, Ar. and P. βδελυρός; see loathsome.
fearful: P. and V. δεινός, φοβερός.