1: Traded partners for sprint ~ (5,4)
2: Authoritative feline vet, perhaps, spreading cure (9)
3: Greek character now collecting stamps (9)
4: English lead getting into the pants of guys (5)
5: Norse gentleman? Not exactly. (5)
6: Defusing timer incorrectly can lead to this! (13)
7: Nasal quality essentially irritates Vera (5)
8: Changed musician not so offensively pious (13)
14: Praised a general capturing returning traitors (9)
15: Ban professional writer (9)
16: Tossing and turning, I wondered what the comforter might be made of (9)
19: German poet in anger tying up Kay (5)
20: How like a nobleman not to be late. (5)
21: Eskimo intuitions are half-developed (5)