Related Clues:

• See 1-Across
• One two of two-and-two
• Playground equipment
• Start of a count
• Guts
• Cotillions
• Teeter-totters
• Diamond stat
• Goes up and down
• Alternates
• Muddles, with 'up'
• Boards with ups and downs
• Vacillates
• Pool need
• Fluctuates wildly