Related Clues:

• Nothing odd so to get a turn to a half-century
• A turn is normal over a half-century
• It's quite usual for it not to be flat
• A turn with a half-century that's neither sharp nor flat
• A turn with a half-century not put on
• Seven, for one
• 7 or 11 on the opening roll at craps is an example of a ___ number
• Not sharp, say
• Birth-related surroundings for you are said to be expected
• Instruction to cancel flat?
• Order could be 'At ease!'
• Old city in part of South Africa is unaffected
• Wild and sure to succeed, as you would expect
• Illegitimate person born with a particular skill
• Obvious choice for bicentenarian as to the 1 down of 5 across