ἀπιστία (apistíaap-is-tee'-ahnoununbelief)
[Grk] ἀπιστία, ὀλιγοπιστία LN: 31.89, 31.97, 31.105 GK: G602
Derivation: from ἄπιστος;
Strong's: faithlessness, i.e. (negatively) disbelief (lack of Christian faith), or (positively) unfaithfulness (disobedience)
KJV: --unbelief.
See: ἄπιστος