ser estéril περὶ τὸ γεννᾶν καὶ ἀγονεῖν Thphr.HP 9.18.3, cf. Ph.2.402
•fig. del alma, Ph.2.435, ἐν μηδενὶ τῶν καλῶν ἐπιτηδευμάτων ἀγονεῖν Gr.Nyss.Hom. in Cant.227.18, cf. 454.12.