Related Clues:

• Rocks
• Vacillates
• Wobbles
• Wobbles on the edge
• Is headed for a fall
• Threatens to topple
• Struggles for balance
• Isn't stable
• Betrays unsteadiness
• Sits precariously
• Walks unsteadily
• Could fall either way
• Shows signs of instability
• Rocks before falling
• Seesaws on the edge