δέον

English (LSJ)

(written

   A δείον PSI4.361.4 (iii B. C.), etc.), οντος, τό, neut. Subst., prop. part. of impers. δεῖ (q. v.):—that which is binding, needful, right, μᾶλλον τοῦ δ. X.Mem.4.3.8; τὰ δ. Th.1.22, etc.; οὐδὲν τῶν δ. πράττοντες Isoc.3.25; πρὸ τοῦ δ. before it be needful, S.Ph.891; ἐν δέοντι (sc. καιρῷ) in good time, E.Med.1277, Plu.Cim.17; ἐν τῷ δ. Hdt.2.159; ἐς δέον ἐγεγόνεε Id.1.119, cf. 186; ἐς δ. πάρεστι S.OT 1416, cf. Ant.386; εἰς δ. λέγειν D.4.14; εἰς τὸ δ. for needful purposes, or in case of need, ἐς τὸ δ. χρῆσθαι Hdt.2.173: hence of secret service, εἰς τὸ δ. ἀπώλεσα Ar.Nu.859 (parody of Pericles' εἰς τὸ δ. ἀνήλωσα Sch. ad loc.); εἰς οὐδὲν δ. ἀναλίσκειν D.3.28: so in pl., εἰς δέοντα ἀναλωθῆναι Andronic.Rhod.p.577 M.