Belief that God exists, based on reason and not any revealed evidence (5)

I believe the answer is:

deism

(Other definitions for deism that I've seen before include "Belief in a supreme being who does not intervene in the universe" , "Belief in a god from reason not revelation" , "Belief in the existence of God" , "Belief in a creator" .)

I've seen this clue in The Guardian.

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