unbeliever[noun]Synonyms: skeptic, doubter, doubting Thomas, headshaker, Pyrrhonian, Pyrrhonist, zetetic
Antonyms: believer
[TahlilGaran] English Synonym Dictionary ▲
un‧be‧liev‧er /ˌʌnbəˈliːvə, ˌʌnbɪˈliːvə $ -ər/
noun [countable] someone who does not believe in God or a particular religion
[TahlilGaran] Dictionary of Contemporary English ▲