apistevist
Someone who rejects using faith as a legitimate method to reach conclusions.
rare
2011, BionicDance, A Pissed-Off Apistevist, https://www.youtube.com/watch?v=FCVyi8p79w4
Where it comes from
From a- + Ancient Greek πιστεύω (pisteúō, “to trust, put faith in”) + -ist.
Adapted from the Wiktionary entry apistevist (CC BY-SA 4.0).