1: Flower festival is pointless (5)
2: In a way, suffer from stain all around us (7)
3: Very loud inside during youngsters' kind of ball (7)
4: Sikh leader grovels or doodles! (7)
5: Cheaper oil, gas distributed in Island chains (13)
6: Debate again, coming from behind and vaguely in the middle (7)
7: Add pantry to make dude! (9)
9: Bug found in examination and in a full going-over (10,3)
13: It's normal if evil?! (6, 3)
16: Booster involving risk brought to a halt early form of Voyager (7)
17: Adult party to entertain disheartened women (5-2)
18: Baby's things even discovered in past (7)
20: Law, say, constraining trade union leaders (7)
23: Spread hocus-pocus partly for this particular purpose (2,3)