A — 1: ἄπιστος
(Strong's #571 — Adjective — apistos — ap'-is-tos )

see BELIEF , C, Note (3).

B — 1: ἀπειθέω
(Strong's #544 — Verb — apeitheo — ap-i-theh'-o )

see DISBELIEVE , DISOBEDIENT , C.