Chained but feed outside TT with hesitation (8)
I believe the answer is:
fettered
'chained' is the definition.
(I've seen this before)
'feed outside tt with hesitation' is the wordplay.
'outside' indicates putting letters inside (some letters go outside others).
'with' means one lot of letters go next to another.
'hesitation' becomes 'er' (sound made while hesitating - um, er).
'tt'+'er'='tter'
'feed' going around 'tter' is 'FETTERED'.
'but' is the link.
(Other definitions for fettered that I've seen before include "Shackled" , "Chained" , "Put in chains" .)