not believe, disobedient, obey not, unbelieving

Strong’s Dictionary of Greek Words:

Number:
544 (find all occurrences in KJV Bible)
Greek:
ἀπειθέω
Transliteration:
apeitheo
Phonic:
ap-i-theh’-o
Meaning:
from 545; to disbelieve (wilfully and perversely)
KJV Usage:
not believe, disobedient, obey not, unbelieving