Related Clues:

• 'Ciao!'
• Concord
• Procrastinator's word
• See 42-Across
• 'So long!'
• 'See ya'
• 'Cheerio!'
• Procrastinator's promise
• Not right now
• Quiet
• Opposite of 61-Across
• Going away statement
• 'Ta-ta!'
• Socialite's 'bye'
• It 'passeth all understanding': Philippians