Feeling of resentment beginning to tell in game (6)
I believe the answer is:
piquet
'game' is the definition.
(piquet is a kind of game)
'feeling of resentment beginning to tell' is the wordplay.
'feeling of resentment' becomes 'pique' (I've seen this before).
'beginning to' indicates taking the first letters.
The initial letter of 'tell' is 't'.
'pique'+'t'='PIQUET'
'in' acts as a link.
(Other definitions for piquet that I've seen before include "patrol" , "Card game with 32 cards" , "Card-game with 32 cards" , "Card game for two" , "Racing driver" .)