Strong's #569: apisteo (pronounced ap-is-teh'-o)

from 571; to be unbelieving, i.e. (transitively) disbelieve, or (by implication) disobey:--believe not.

Thayer's Greek Lexicon:

̓́

apisteō

1) to betray a trust, be unfaithful

2) to have no belief, disbelieve

Part of Speech: verb

Relation: from G571

Citing in TDNT: 6:174, 849

Usage:

This word is used 7 times:

 

Mark 16:11: "had been seen of her, believed not."
Mark 16:16: "is baptized shall be saved; but he that believeth not shall be damned."
Luke 24:11: "as idle tales, and they believed them not."
Luke 24:41: "And while they yet believed not for joy, and wondered,"
Acts 28:24: "believed the things which were spoken, and some believed not."
Romans 3:3: "what if some did not believe? shall their unbelief make the faith of God without effect?"
2 Timothy 2:13: "If we believe not, yet he abideth faithful: he cannot deny"