Titled lady expected endless game (7)
I believe the answer is:
duchess
'titled lady' is the definition.
(woman with an aristocratic title)
'expected endless game' is the wordplay.
'expected' becomes 'due' (similar in meaning).
'endless' means to remove the last letter.
'game' becomes 'chess' (chess is a kind of game).
'due' with its final letter taken away is 'du'.
'du'+'chess'='DUCHESS'
(Other definitions for duchess that I've seen before include "Great lady" , "Duke's wife" , "Noblewoman" , "Titled lady" , "Female aristocrat" .)