μονογενὴς θυγάτηρ

From LSJ

ἀκίνδυνοι δ' ἀρεταὶ οὔτε παρ' ἀνδράσιν οὔτ' ἐν ναυσὶ κοίλαις τίμιαι → but excellence without danger is honored neither among men nor in hollow ships

Source

Greek > English (Woodhouse)

an only daughter