Strong's G545 — ἀπειθής (adjective)
apeithes (ap-ei-thace') adj.
1. unpersuadable, i.e. contumacious
[from G1 (as a negative particle) and G3982]
KJV: disobedient 
Root(s): G1, G3982 
Hebrew root: πείθω
Occurrences: 6