Related Clues:

• Open, in a way
• Overdue
• Volunteer
• Like some leaves
• Outstanding
• Pro bono
• Like outstanding debts
• Voluntary
• Outstanding, as debt
• Waiting for a check
• Like debts
• Like a procrastinator's bills
• Of bill, outstanding
• How a French father I had was not 33 across
• That could be up, and I do it for 31 across