noun

unbeliever

un-bi-LEE-ver/ˌʌnbɪˈliːvər/

A person who does not accept a religious faith or doctrine.

The congregation welcomes the unbeliever without asking her to profess faith.

A young adult woman remains unconvinced by another woman's claim that a plain pendant has special powers: she raises a gently dismissive palm and regards the offered pendant skeptically.

Etymology

unOld Englishnot

+believEnglishhave faith; accept as true

+erEnglishperson who

A believer is someone who accepts something as true; un- negates that acceptance. The word is recorded especially for someone who rejects a particular religion, matching its use relative to a specified faith or claim.

In context

APC Bible College33:30

now verse 15 if the unbeliever departs okay let them depart now if the husband is saying that you know unbelieving husband or unbelieving wife they're saying i cannot live with this person who's a believer

1&2 Corinthians | Lecture 08 : BC304-1&2Cor-20210827

More examples

As an unbeliever, he does not accept the church's teachings.
The debate brings believers and unbelievers together to discuss religion.
She remains an unbeliever despite her family's deep religious faith.

Forms

unbeliever · unbelievers

unbelief noun — Lack of acceptance of religious faith.

Similar words

atheist: Specifically lacks belief in gods, not merely a particular doctrine.
agnostic: Emphasizes uncertainty about God's existence rather than rejection of faith.