Possible Clues:

• Loyalty overlooking leader's worn condition
• News updates about corrupt iTunes being out of date?
• User isn’t bothered by salesman’s initial lack of practice
• Tarnish can, in devices, start to spoil
• Condition of being out of practice
• Result of lacking practice and vigour, initially changing 18
• Way to be impressed by sunrise's form - or lack of it?
• Discolouration of age
• What the boxer suffers after a lay-off
• Lack of practice in oxidising process?