Unruly mob — ten put in grave situation (6)
I believe the answer is:
entomb
'put in grave situation' is the definition.
'entomb' can be an answer for 'put' (thesaurus). I am not certain of the 'in grave situation' bit.
'unruly mob ten' is the wordplay.
'unruly' is an anagram indicator.
'mob'+'ten'='mobten'
'mobten' with letters rearranged gives 'ENTOMB'.
Can you help me to learn more?
(Other definitions for entomb that I've seen before include "Put in a grave" , "put in ground" , "cover late arrival" , "dispose of the dead" , "Place a dead body in a vault" .)