Last solution

Across: 6 Quicken; 7 Debar; 9 Old; 10 Attenuate; 12 Deferential; 15 Exhortation; 17 Communion; 19 Ill; 21 Unity; 22 Rejoice.

Down: 1 Guile; 2 Act; 3 Zest; 4 Deduction; 5 Partial; 8 Desert; 11 Deformity; 13 Extend; 14 Expound; 16 Slack; 18 Over; 20 Vow.