Dict: strongs - unbelieving

Strongs:

G544 @ ἀπειθέω apeitheō ap-i-theh'-o From G545; to disbelieve (wilfully and perversely): - not believe disobedient obey not unbelieving.

G569 @ ἀπιστέω apisteō ap-is-teh'-o From G571; to be unbelieving that is (transitively) disbelieve or (by implication) disobey: - believe not.

G878 @ ἄφρων aphrōn af'-rone From G1 (as a negative particle) and G5424; properly mindless that is stupid (by implication) ignorant (specifically) egotistic (practically) rash or (morally) unbelieving: - fool (-ish) unwise.