Extended Strong's Greek Lexicon (Abbott-Smith based)
to slander
Usage: κατα-λαλέω, -ῶ [in LXX chiefly for דָבַר ni., pi. ;] to speak evil of, rail at: in cl., with accusative; in LXX, __(a) with genitive, __(b) before κατά, with genitive; in NT, with genitive (M, Pr., 65): Jas.4:11, 1Pe.2:12; pass., 1Pe.3:16,† (AS)