A primitive root; properly, to wrench, i.e. (figuratively) to subvert -- overthrow, pervert.
H5557. salaph
סָלַף verb twist, pervert, overturn (סְלַף ᵑ7 twist (rare); Arabic is pass, pass away, come to naught Lane1407f.); —
Pi`el Imperfect3masculine singular יְסַלֵּף Job 12:19 2t., וַיְסַלֵּף Proverbs 22:12; 3feminine singular תְּסַלֵּף 13:6; 19:3; Participle מְסַלֵּף 21:12; —
1 pervert, Exodus 23:8 (E) a bribe perverteth the case (cause, דִּבְרֵי) of righteous, = Deuteronomy 16:19.
2 subvert, turn upside down, ruin (only Wisdom Literature): with accusative of person Job 12:19; Proverbs 13:6 (opposed to תִּצֹּר), 21:12; דַּרְכּוֺ תּ אָדָם ׳אִוֶּלֶת 19:3 a man's folly subverteth his way; בֹגֵד דִּבְרֵי וַיְסַלֵּף 22:12 and he (׳י) subverteth the affairs of a treacherous man.