εἰς τετρημένον πίθον ἀντλεῖν → run water into a punctured pitcher, to the perforated jar bale water, labour in vain, labor in vain
agitate: P. and V. ταράσσειν, ἐκπλήσσω, ἐκπλήσσειν, συνταράσσειν.
frustrate: P. and V. σφάλλω, σφάλλειν.
throw into confusion: P. and V. συγχεῖν.
