-the·ism
\when immediately preceded by stress thēˌizəm or ˈth-, when immediately preceded by nonstress (ˌ)th- or ˈth-\  noun combining form 
(-s) 
Etymology: Middle French -théisme, from thé- the- + -isme -ism 
 : belief in (such) a god or (such or so many) gods 
< pantheism >
< zootheism >
< pantheism >
< zootheism >