Related Clues:

• Bitch and moan
• Picked beef?
• Thing to be picked
• Petty peeve
• -- -picking
• Little complaint
• Have a ___ to pick
• Grievance
• Be difficult
• Niggling criticism
• Spar verbally
• What the nit-picking barber did?
• Engage in debate
• Hash out differences
• Tiny criticism, slangily