Related Clues:

• 'This is ___ two can play!'
• 'It's only ___!'
• 'War's ___': Cowper
• "But war's ___" (Cowper)
• 'Only ___' (NPR program)
• 'It's only ___'
• 'It's only ___ . . .'
• "It's only ___"
• 'It's only ___'
• 'It's only __'
• Maximum ability, so to speak
• NPR's 'Only ___'
• "This isn't ___!"
• Top performance level
• Best effort