8 Provide nourishment (4)
9 Steadfast (10)
10 Stubborn (6)
11 Persevering (8)
12 Toadfish (4)
13 Study of numbers (10)
17 Plant with trumpet-shaped flowers (4)
18 Jargon (5)
19 ____rn = rule (4)
20 Spectacles (10)
22 Former Italian currency (4)
23 Hairy elephants (8)
27 Live in a tent (6)
28 Access (10)
29 Hotels (4)
Down
1 Invariability (10)
2 Consultive (8)
3 Mercy killing (10)
4 Was indebted to (4)
5 Wicked (4)
6 Miserly (6)
7 In a little while (archaic) (4)
14 Groans (5)
15 Recorded officially (10)
16 Runs our country (10)
19 Pertaining to the Milky Way (8)
21 Ploy (6)
24 Assistant (4)
25 Bye-bye (4)
26 French for "Without" (4)