Strong’s Greek
G2637 — katalalos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
κατάλαλος
katalalos — pronounced kat-al'-al-os
from 2596 and the base of 2980; talkative against, i.e. a slanderer:--backbiter. see GREEK for 2596 see GREEK for 2980
1 occurrence in the KJV.
Romans 1:30
Backbiters, haters of God, despiteful, proud, boasters, inventors of evil things, disobedient to parents,