Related Clues:

• Really bug
• Words on a diner ad, perhaps
• Really get to
• Obsess
• Really worry
• Vex a lot
• Bother greatly
• Bother continuously
• Trouble no end
• Irk to no end
• Bother (5)
• Patronize, as a diner
• Vex no end
• Irritate psychologically
• Frequent, as a diner