Last solution

Across: 1 Straightway; 9 Ninepin; 10 Tiara; 11 Outer; 12 Average;

13 Reeked; 15 Septet; 18 Garbage; 20 Untie; 22 Notch; 23 Tripoli;

24 Acknowledge. Down: 2 Tenet; 3 Asperse; 4 Genial; 5 Title;

6 Adamant; 7 Encouraging; 8 Parenthesis; 14 Erratic; 16 Erudite;

17 Bestow; 19 Ashen; 21 Thong.