| poor prospect(expression, impossible, unthinkable, underdog, sleeper) |
| remote possibility(expression, unknown, doubtfulness, underdog, sleeper) |
| sleeper(unknown, doubtfulness, underdog, improbability, also-ran) |
| slim chance(expression, impossible, unthinkable, underdog, sleeper) |
| stalking horse(expression, unknown, doubtfulness, underdog, sleeper) |
| underdog(unknown, doubtfulness, sleeper, improbability, also-ran) |
| unexpected winner(expression, unknown, doubtfulness, underdog, sleeper) |
| unknown(doubtfulness, underdog, sleeper, improbability, also-ran) |
| unknown quantity(expression, unknown, doubtfulness, underdog, sleeper) |
| unlikely winner(expression, unknown, doubtfulness, underdog, sleeper) |
| upsetter(unknown, doubtfulness, underdog, sleeper, improbability) |
| doubtfulness(improbability, implausibility) |
| dubiousness(doubtfulness, improbability, implausibility) |
| fat chance(noun, chance) |
| incongruousness(doubtfulness, improbability, implausibility) |
| questionability(doubtfulness, improbability, implausibility) |