1. Pertaining to the backbone (6)
4. Not suitable or right (8)
10. Irrational (9)
11. Unprecedented (5)
12. A timid man (5)
13. Investigator (9)
14. Unpredictable (7)
16. All excited (4)
19. Portent (4)
21. A shipping receipt (7)
24. Whatever person (9)
25. Drive (5)
26. Large Asian country (5)
27. Cradlesongs (9)
28. Jack of all trades (8)
29. Semiformal evening dress for men (6)
Down
1. An elderly unmarried woman (8)
2. Unreal (8)
3. Furious (5)
5. Territorial reserve (7)
6. A communal dining-hall (9)
7. Sanction (6)
8. Somewhat (6)
9. Corrosive (6)
15. Not permanent (9)
17. Out of bounds (8)
18. In the open air (8)
20. A short novel (7)
21. Trill (6)
22. Anchor up (6)
23. Aureate (6)
25. Blunder (5)