Trifled with a game fellow? (5)
I believe the answer is:
toyed
'trifled with' is the definition.
(I've seen this in another clue)
'a game fellow?' is the wordplay.
'a game' becomes 'toy' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'fellow?' becomes 'ed' (short for Edward).
'toy'+'ed'='TOYED'
Can you help me to learn more?
(Other definitions for toyed that I've seen before include "was trifling" , "Acted idly" , "Trifled (with someone's affections)" , "fiddled" , "Engaged in an activity, but not seriously" .)