G1571
ἐκκαθαίρω
to cleanse
ἐκ-καθαίρω [in LXX for בָּעַר, etc. ;] __1. to cleanse thoroughly, cleanse out: with accusative, ἑαυτόν, 2Ti.2:21; of the impurity removed, ζυμήν, 1Co.5:7.† (AS)
The KJV translates G1571 in the following manner:
out (2x), purge (2x)
Full Thayer's lexicon entry
ἐκκαθαίρω — ekkathaírō
ἐκκαθαίρω: 1 aorist ἐξεκάθαρα (on the ἆ cf. Buttmann, 41 (35)); (ἐκ either equivalent to utterly or for ἐκ τίνος); in Greek writings from Homer, Iliad 2, 153 down; to cleanse out, clean thoroughly: ἐμαυτόν ἀπό τίνος, to avoid defilement from one and so keep oneself pure, 2Ti 2:21; with the accusative of the thing by the removal of which something is made clean (A. V. purge out), 1Co 5:7. (For צָרַף equivalent to to cleanse, Jdg 7:4 variant; for בִּעֵר equivalent to to take away, Deu 26:13.)
2 occurrences
I Corinthians (1), II Timothy (1)