14: Distinctive atmospheres
21: Part of a costume, perhaps
30: Toddler's constant question
32: Cutlass Supreme, e.g.
39: Article that may list survivors
45: Bearded African grazer
46: Renege, slangily, with 'out'
51: Utterance of revulsion
56: Knuckle sandwich ingredients?
65: Repetitive computer program
72: Where to see the alphabet float
75: Geological time periods