Din god and devil initially investigated with sign of hesitation (11)
I believe the answer is:
pandemonium
'din' is the definition.
(I've seen this in another clue)
'god and devil initially investigated with sign of hesitation' is the wordplay.
'god' becomes 'Pan' (Pan is a Greek god).
'and' means one lot of letters go next to another.
'devil' becomes 'demon' (synonyms).
'initially' indicates taking the first letters.
'with sign of hesitation' becomes 'um' (I am not sure about this - if you are sure you should believe this answer much more).
The first letter of 'investigated' is 'i'.
'pan'+'demon'+'i'+'um'='PANDEMONIUM'
Can you help me to learn more?
(Other definitions for pandemonium that I've seen before include "Uproar, wild and noisy confusion" , "Bedlam" , "Chaos and confusion" , "mayhem" , "Tumultuous uproar" .)