1: Hot and sultry, stripping right in current (7)
2: Moderately amphibian, for example, by the middle of the creek (2,1,6)
3: He is round (grossly fed) (9)
4: Cabaret, nearly empty, takes prize (9)
5: A friend comes round to appease (5)
6: Drive carefully and live (5)
7: Re: bands, unfinished hymn, a type of poetry (5)
8: Chump getting past in chasm (5)
14: Tom Cruise playing an outfitter (9)
15: Cast light upon awfully tired aria (9)
16: Offering advice, King takes over one bit, zany initially (9)
19: Heart of delicatessen, certainly, is meat (7)
20: Witticism provided theme (5)
21: Courses finish with Decline and Fall (5)
23: Contrarily accepted gold slab (5)