Related Clues:

• Suffix with book
• Give the OK
• Say it's OK
• Rented
• Rent out
• Court call that sounds permissive
• "___ Me Call You Sweetheart"
• Tennis umpire's cry
• Do-over, in tennis
• Fail to prevent
• Word with up, out or down
• ''___ It Be'' (Beatles)
• Ease, with 'up'
• Call at the net
• Suffix for book