1: Amazingly idle - why give up? (5)
2: Head off switchboard operator's request for rental (9)
3: Choose to take the top off (3)
4: Tepid on Germany's military advocate (9)
5: Principle unaffected by revolution (5)
6: A quaintly pleasing accent (5)
7: Eat away at verse after initial hesitation (5)
8: The man's a trite, worn-out waiter (9)
12: Do tell! A puzzle found in a cornfield? (5)
14: Offering resistance, cattle run wild (9)
15: Plenty supporting nuclear process (9)
16: One hundred-odd bits of bombs in some projectiles initially (5)
17: Dirty Targa term is a four-letter word (9)
21: Run over Martian explorer (5)
22: Sleepy returned it, blushing (5)
23: Good Republican source of life-giving system for short-handed office workers (5)
24: In Germany, the monster returned from the east. (5)
27: Neil lost a letter and ended up with nothing (3)