θρεπ-τέος,α,ον, (τρέφω)
A. to be fed, nurtured, metaph., γυμναστικῇ
Pl. R. 403c
.
II. θρεπτέον one must feed, keep, Id. Ti. 19a , X. Lac. 9.5 .
2. (from Pass. )ἢ ἐργαστέον ἢ ἀπὸ τῶν εἰργασμένων θρεπτέον one must liveon what has been earned, Id. Eq.Mag. 8.8 .