καθῆραι
From LSJ
ῥεῖα δ' ἀρίζηλον μινύθει καὶ ἄδηλον ἀέξει, ῥεῖα δέ τ' ἰθύνει σκολιὸν καὶ ἀγήνορα κάρφει → easily he humbles the proud and raises the obscure, and easily he straightens the crooked and blasts the proud (Hesiod, Works and Days 6-8)
English (LSJ)
καθήρας, aor. 1 inf. and part. of καθαίρω.
Greek (Liddell-Scott)
κᾰθῆραι: καθήρας, ἀπαρ. καὶ μετοχ. ἀορ. α΄ τοῦ καθαίρω.