ἀνυστέον
From LSJ
ᾗ μήτε χλαῖνα μήτε σισύρα συμφέρει → content neither with cloak nor rug, be never satisfied, can't get no satisfaction, be hard to please
English (LSJ)
or ἀνῠ-στέα, A one must accomplish, Suid.
Greek (Liddell-Scott)
ἀνυστέον: ἢ -έα, ῥημ. ἐπίθ. «δεῖ ἀνύειν» Σουΐδ. ἐν λ. ἄνυσται.
Spanish (DGE)
hay que realizar Sud.