1. Fail to notice (8)
5. Change direction abruptly (6)
9. One who quakes (8)
10. Acid-base indicator (6)
12. Not lower (5)
13. An expanse of scenery (9)
14. Of the highest quality (6)
16. Considerate (7)
19. Hurrying on foot (7)
21. Charm (6)
23. An acrobat's high wire (9)
25. First Greek letter (5)
26. Twosome (6)
27. A browser favorite (8)
28. Potential (6)
29. Defaulter (8)
Down
1. Not the input (6)
2. Immunity (9)
3. Toil (5)
4. Cover a part of (7)
6. Capricious (9)
7. Cuban dance (5)
8. From the east (8)
11. Agitated state (4)
15. A 3-sport race (9)
17. Hearth (9)
18. Urgently needed (8)
20. Morally admirable (4)
21. Common solvent (7)
22. A type of seal (6)
24. Short low gruff noise (5)
25. Requested (5)