ματαίωσις

From LSJ

βραχεῖα τέρψις ἡδονῆς κακῆς → the enjoyment from a cheap pleasure is short, there's brief enjoyment in dishonourable pleasure

Source

Greek (Liddell-Scott)

ματαίωσις: ἡ, ματαιότης, Ἀθαν. τ. 1, σ. 1041Α.