1 down. Litter. 6 letters.
2 down. Sparring partner? 5 letters.
3 down. Play to the crowd. 7 letters.
5 down. River’s meander. 5 letters.
6 down. Descriptive of mysterious puzzle? 7 letters.
7 down. Quaggy. 6 letters.
8 down. Dumbfound. 11 letters.
14 down. Howl loud and long. 7 letters.
15 down. Good Lord! 2 letters and 5 letters.
16 down. Sing like a songbird. 6 letters.
17 down. Alloy figurine? 6 letters.
19 down. Garden of Eden? 5 letters.
21 down. Booth. 5 letters.

