In terms, aspiritism (LH:2), from a- meaning "not, without, or opposite", + spirit meaning "ka or anima", + -ism meaning "doctrine or idea", means disbelief in the existence of the spirit. The term was coined in 2015 by Libb Thims.
- “Uncivilized ignorant fools, who imagine that spirit is something different from body, and reaps the rewards of actions in future state; we might as well expect to find excellent fruit drip from trees growing in the air.”
- — Anon (c.600BC), Charvaka position; voice of: Passion in The Rise of the Moon Intellect (1200) 
In 2015, Libb Thims, in the header page of the “atheism types by denial and belief” table, introduced the term “aspiritism”, as one who denies the existence of the spirit, and also wrote an overview section, in respect to the historical summary of disbelief in the existence of the spirit.
- (a) Maithila (Kirsha Misra) (Ѻ). (1200). Prabôdha chandrôdaya, or Rise of the moon of intellect: a Spiritual Drama ; and, Âtma bodha, or The knowledge of self (translator: J. Taylor) (Arc). Publisher, 1893.
(b) Hecht, Jennifer M. (2003). Doubt: A History: The Great Doubters and Their Legacy of Innovation from Socrates and Jesus to Thomas (§:The Carvaka, pgs. 94-100; fruit, pg. 95). HarperOne.
- Atheism types by denial and belief – Hmolpedia 2020.