ἀπογνωστέον
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)
A one must give up in despair, ἐλπίδας Ph.1.455, cf. Aristaenet.1.17.
2 one mustreject the view, Plot.4.9.2: c.gen.,Simp.in Ph.610.9.
Spanish (DGE)
1 hay que abandonar τὰς ... ἐλπίδας Ph.1.455, cf. Aristaenet.1.17.20.
2 hay que desechar, rechazar συμπάσχειν μὲν οὐκ ... ἀπογνωστέον no hay que descartar una simpatía Plot.4.9.2, c. gen., Simp.in Ph.610.9.
Greek (Liddell-Scott)
ἀπογνωστέον: ῥηματ. ἐπίθ. τοῦ ἀπογιγνώσκω, δεῖ ἀπογιγνώσκειν, οὐκ ἀπογνωστέον τοῦ κοινοὺς ἅπασι νόμους γενέσθαι Συνέσ. 154C.