The Collaborative International Dictionary
Theistical
Theistic \The*is"tic\, Theistical \The*is"tic*al\, a. Of or pertaining to theism, or a theist; according to the doctrine of theists.
Wiktionary
theistical
a. of or relating to theism
WordNet
Usage examples of "theistical".
Then he recited in English an Arya-Somaj prayer of a theistical nature, and stuffed his mouth with pan and betel.