Related Clues:

• Unstable or teetering
• Wobbly
• Far from a sure thing
• Not on solid ground
• Touch-and-go
• Rickety
• Somewhat dubious
• Weak in the knees
• Full of uncertainty
• Quivering
• Far from sure
• Morally dubious
• Certainly not certain
• ????
• Informally dubious or uncertain