QUICK CLUES

ACROSS

1 Breed of large dog (7)

4 A wild card (5)

7 Fixed period (4)

8 One-storey house (8)

10 Having lofty ideals (4-6) 12 Stimulus (6)

13 Ailing (6)

15 Strictly honest (10)

18 With great wariness (8) 19 Become wearisome (4)

20 Region of south-west China (5) 21 Dearth (7)

DOWN

1 Be counterpart of (5)

2 Become dispersed (8)

3 Speaking easily (6)

4 Relentless destructive force (10) 5 Variety of cabbage (4)

6 Unjust treatment (3,4)

9 Knowing everything (10) 11 Urbane (8)

12 Filled (7)

14 Bring to a stop (4,2)

16 Sortie (5)

17 Humiliating rebuff (4)