Solemn ceremonies (5)
I believe the answer is:
rites
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">solemn ceremonies</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for rites that I've seen before include "formal procedure" , "Prescribed religious ceremonies" , "Ceremonial forms" , "Social customs" , "Ceremonies or services" .)