20: Give a Valium to, e.g.
27: They can really put on a show
35: Renege, slangily, with 'out'
48: Flippered fish fancier
52: Fixed payments, as for students
58: Leave in, to an editor
59: Dress fancily, with 'out'
60: Train for a title fight
66: Where cookies might crumble
71: Monthly payment, for many
75: Dermatologist's concern