Hebrew and Greek Strong's Dictionary with all the definitions plus combined with every place that word is used in the definitions.
Complete index of every word used in both the Hebrew and Greek Strong's Dictionary in English Word order.
Hebrew and Greek Expanded Dictionary
unbelieving 0544 - apeitheo {ap-i-theh'-o}; from 0545; to disbelieve (wilfully and perversely): -- not believe, disobedient, obey not, {unbelieving}.
unbelieving 0569 - apisteo {ap-is-teh'-o}; from 0571; to be {unbelieving}, i.e. (transitively) disbelieve, or (by implication) disobey: -- believe not.
unbelieving 0878 - aphron {af'-rone}; from 0001 (as a negative particle) and 5424; properly, mindless, i.e. stupid, (by implication) ignorant, (specially) egotistic, (practically) rash, or (morally) {unbelieving}: -- fool(-ish), unwise.