Strong's G2644 — καταλλάσσω (verb)
katallasso (kat-al-las'-so) v.
1. to change mutually
2. (figuratively) to reconcile
[from G2596 and G236]
KJV: reconcile 
Root(s): G2596, G236 
Hebrew root: ἀλλάσσω
Occurrences: 6