Quick –

No. 16 489

Across: 1 Unnecessary; 9 Fancied; 10 Plait; 11 Inert; 12 Stamina; 13 Mutter; 15 Assent; 18 Thimble; 20 Aroma; 22 Vogue; 23 Utilise; 24 Crestfallen.

Down: 2 Nonce; 3 Epistle; 4 Eldest; 5 Sepia; 6 Realise; 7 Affirmative; 8 Strait-laced; 14 Trigger; 16 Spatial; 17 Rebuff; 19 Bless; 21 Olive.