κιθαριστέον
From LSJ
Oἷς ὁ βιος ἀεὶ φόβων καὶ ὑποψίας ἐστὶ πλήρης, τούτοις οὔτε πλοῦτος οὔτε δόξα τέρψιν παρέχει. → To those for whom life is always full of fears and suspicion, neither wealth nor fame offers pleasure.
English (LSJ)
A one must play the cithara, Pl.Sis. 389c.
Greek (Liddell-Scott)
κῐθᾰριστέον: ῥημ. ἐπίθετ., δεῖ καθαρίζειν, Πλάτ. Σίσυφ. 389C.
Dutch (Woordenboekgrieks.nl)
κιθαριστέον, adj. verb. van κιθαρίζω, er moet op de citer worden gespeeld.