οὐ γὰρ ἂν τό γε πραχθὲν ἀγένητον θείη → since he cannot make what was done as though it had not come to pass
ē-gigno: ĕre,
I to procreate, produce, bring forth: et altos interdum ramos egigni corpore vivo, Lucr. 2, 703 Lachm. N. cr.
ēgignō,¹⁶ ĕre, tr., produire ; [pass.] croître de, sortir de : Lucr. 2, 703.