Dreadful resistance restricting the indecisive type (8)
I believe the answer is:
ditherer
'indecisive type' is the definition.
'dreadful resistance restricting the' is the wordplay.
'dreadful' becomes 'dire' ('dire' can be a synonym of 'dreadful').
'resistance' becomes 'r' (abbreviation).
'restricting' is an insertion indicator.
'dire'+'r'='direr'
'direr' going around 'the' is 'DITHERER'.
(Other definitions for ditherer that I've seen before include "person who hesitates" , "Hesitant person" , "Indecisive person" .)