Related Clues:

• Rodgers and Hart's 'Johnny ___'
• Two-dimensional
• One-dimensional
• Straight
• See 33-Across
• Unvarying
• Monotonous
• Like some algebra
• Like some thinking
• Rodgers and Hart's "Johnny ---"
• Musically monotonous
• Lacking in variety
• Without variety
• Kind of equation
• Like the equation x = 7y