| tricky(adjective, delicate, uncertain, unstable, doubtful) |
| uncertain(adjective, open, obscure, delicate, unstable) |
| unconfirmed(doubtful, shaky, risky, unlikely, unpromising) |
| uneasy(shaky, unlikely, unpromising) |
| unhealthy(adjective, delicate, uncertain, unstable, doubtful) |
| unreliable(adjective, delicate, uncertain, unstable, doubtful) |
| unsafe(adjective, delicate, uncertain, unstable, doubtful) |
| unsettled(adjective, open, delicate, uncertain, unstable) |
| unstable(adjective, delicate, uncertain, doubtful, unsettled) |
| unsteady(adjective, delicate, uncertain, unstable, doubtful) |
| unsure(adjective, open, delicate, uncertain, unstable) |
| up for grabs(expression, doubtful, shaky, risky, unlikely) |
| actionable |
| be taken in(susceptible, risky, nonresistant) |
| beatable |
| behind eight ball(expression, idiom, susceptible, risky, nonresistant) |
| challengeable |
| conquerable |
| daring(susceptible, risky, nonresistant) |
| deniable |