Strong's G1246 — διακατελέγχομαι (verb)
diakatelegchomai (dee-ak-at-el-eng'-khom-ai) v.
1. to prove downright, i.e. confute
[middle voice from G1223 and a compound of G2596 and G1651]
KJV: convince 
Root(s): G1223, G2596, G1651 
Hebrew root: κατά
Occurrences: 1