System of beliefs (5)
I believe the answer is:
creed
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">system of beliefs</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for creed that I've seen before include "Catechism" , "Articles of faith" , "Religious doctrine" , "System of religious belief" , "System of belief, faith" .)