Tendentious bid may be put forward after no end of hesitation (7)
I believe the answer is:
doubled
'tendentious bid may be' is the definition.
(a bid might be doubled in bridge)
'put forward after no end of hesitation' is the wordplay.
'put forward' becomes 'led' (to lead is to go forward).
'after' is a charade indicator (letters next to each other).
'no end of' means to remove the last letter.
'hesitation' becomes 'doubt'.
'doubt' with its final letter taken away is 'doub'.
'led' put after 'doub' is 'DOUBLED'.
(Other definitions for doubled that I've seen before include "five hundred became one thousand?" , "Increased 100%" , "Multiplied by two" .)