Possible Clues:

• Find fault with the setter's cracker
• Attempt to tarnish
• Level a charge against — pace him (anag)
• Accuse, as a politician
• Accuse of misconduct in office
• Cast doubt on my claim to be a beauty
• Charge (a president) with misconduct
• Find fault with lime, having peeled fruit
• Find fault with what's found in the centre of lime fruit
• Charge mischievous child brought before a head