Related Clues:

• In error - not so perfect
• Lacking power to hold naughty child, a head is blameless
• Almost without turning, beauty's fit and perfect
• Half-square key with a movement in need of oiling
• Beyond doubt or reproach
• Like a mouse's cry
• Requiring oiling?
• Moment of high tension towards the end of a sporting contest
• Protecting queen with lackey, use an orderly beyond reproach
• A full set's played, getting every first serve in?