ἐμποδὼν γίγνεσθαι
From LSJ
νόησε δὲ δῖος Ὀδυσσεὺς σαίνοντάς τε κύνας, περί τε κτύπος ἦλθε ποδοῖιν → godly Odysseus heard the fawning of dogs, and on top of that came the beat of two feet
Greek > English (Woodhouse)
hinder, be a bar to, be a barrier to, be a check to, be a hindrance to, be an impediment to, be an interruption to, be an obstacle to, be an obstacle