8 Sieve (4)
9 Uncompromising (10)
10 A short passage at the end of a literary work (6)
11 Longing (8)
12 Effervesce (4)
13 Unfinished (10)
17 Decorate with gold leaf (4)
18 A Great Lake (5)
19 Coral island (4)
20 Opinion pieces in newspapers (10)
22 A stupid person (4)
23 Cajoles (8)
27 Fail to fulfill a promise (6)
28 Companionship (10)
29 Appear (4)
Down
1 Made less complex (10)
2 Used (8)
3 The kookaburra bird (10)
4 Chancy (4)
5 Queen of the gods (Greek mythology) (4)
6 Converse non-verbally (6)
7 Scheme (4)
14 Papal court (5)
15 An unpublished literary work (10)
16 Systematic religious beliefs (10)
19 Incivility (8)
21 Increase threefold (6)
24 Gardening tools (4)
25 Lascivious (4)
26 Area of central London (4)