| erratic(adjective, weak, unusual, strange, loose) |
| evasive(adjective, uncertain, dishonest, doubtful, vague) |
| false(adjective, dishonest, deceitful, unpredictable, unreliable) |
| faltering(adjective, uncertain, hesitant, unsure, unfaithful) |
| flimsy(adjective, extraordinary, unreasonable, amazing, doubtful) |
| fraudulent |
| hazy(uncertain, doubtful, vague, unclear, ambiguous) |
| indistinct(adjective, rough, uncertain, doubtful, unsettled) |
| irresponsible(adjective, dishonest, deceitful, unpredictable, unreliable) |
| mysterious(unusual, strange, uncertain, doubtful, odd) |
| not kosher(expression, suspect, shady) |
| open to question(expression, adjective, idiom, uncertain, doubtful) |
| puzzling(unusual, strange, uncertain, unreasonable, vague) |
| remote(adjective, doubtful, unlikely, improbable) |
| risky(adjective, weak, delicate, uncertain, sensitive) |
| rocky(adjective, weak, delicate, uncertain, sensitive) |
| strange(adjective, unusual, fantastic, irregular, doubtful) |
| tenuous(adjective, weak, thin) |
| unconvinced(adjective, uncertain, nervous, doubtful, unsettled) |
| undetermined(adjective, open, rough, uncertainty, uncertain) |