ritualism
US /ˈrɪtʃ.u.əl.ɪ.zəm/
UK /ˈrɪtʃ.u.əl.ɪ.zəm/

1.
the regular or excessive practice of rituals, especially religious ones
:
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The ancient culture was known for its elaborate ritualism.
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Some critics argue that modern society has lost its sense of meaningful ritualism.