responsibility
From LSJ
τὸν αὐτὸν ἔρανον ἀποδοῦναι → pay him back in his own coin, repay him in his own coin, pay someone back in their own coin, pay back in someone's own coin, give tit for tat, pay back in kind
English > Greek (Woodhouse)
substantive
on one's own responsibility: P. ἀφ' ἑαυτοῦ γνώμης, or ἀφ' ἑαυτοῦ (Thuc. 5, 60).
take responsibility of, take on oneself: P. ἐφ' ἑαυτὸν ἀναδέχεσθαι (acc.) (Dem. 704).