ῥίγιστος
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
English (LSJ)
η, ον, Sup. Adj. formed from ῥιγέω,
A most horrible, ῥίγιστα θεοὶ τετληότες εἰμέν Il.5.873; [Ζεὺς] ῥίγιστος ἀλιτροῖς A.R.2.215, cf. 292; ὃ δὴ ῥίγιστον ὄδωδεν Nic.Th.64.