SOLUTION TO PUZZLE No. 8569:

ACROSS: 1 Grudge; 4 Opponent; 10 Overrun; 11 Muffler; 12 Nine; 13 Pronounced; 16 System; 17 Certain; 20 General; 21 Angela; 24 Undertaker; 25 Fear; 27 Stretch; 29 Traduce; 30 Decadent; 31 Stakes.

DOWN: 1 Goodness; 2 Use one's head; 3 Garb; 5 Pomander; 6 Off-putting; 7 Ell; 8 Tirade; 9 Entry; 14 Chinese junk; 15 Celebrated; 18 Marathon; 19 Hairless; 22 Cursed; 23 Petty; 26 Part; 28 Roc.