Some abhor development in the mob (5)
I believe the answer is:
horde
'mob' is the definition.
(horde can mean a mob or crowd of people)
'some abhor development in' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'HORDE' is hidden in the letters of 'abhor development in'.
'the' is the link.
(Other definitions for horde that I've seen before include "Great crowd" , "Large force" , "Vast multitude" , "A swarm or multitude" , "Large crowd" .)