praefidens
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
Latin > English (Lewis & Short)
prae-fīdens: entis, Part. fido,
I trusting too much, over-confident (rare but class.): exsultantem te et praefidentem tibi Repriment legum habenae, self-confident, rash, Poët. ap. Cic. de Or. 3, 41, 166; so, homines sibi praefidentes, Cic. Off. 1, 26, 90.—Adv.: praefīdenter, too confidently (late Lat.); comp.: praefidentius, Aug. Ep. 55.
Latin > French (Gaffiot 2016)
præfīdēns,¹⁶ tis, qui a une très grande confiance : sibi Cic. Off. 1, 90, qui a trop de confiance en soi-même, présomptueux.
