| unknown(noun, doubt, doubtfulness, underdog, sleeper) |
| dark horse(noun, possibility) |
| riddle |
| also-ran(unknown, doubtfulness, underdog, sleeper, improbability) |
| frontier |
| hundred-to-one shot(expression, unknown, doubtfulness, underdog, sleeper) |
| improbability(unknown, doubtfulness, underdog, sleeper, also-ran) |
| little chance(expression, unknown, doubtfulness, underdog, sleeper) |
| little opportunity(expression, unknown, doubtfulness, underdog, sleeper) |
| long shot(expression, unknown, doubtfulness, underdog, sleeper) |
| mystery |
| outside chance(expression, unknown, doubtfulness, underdog, sleeper) |
| outside shot(expression, unknown, doubtfulness, underdog, sleeper) |
| poor bet(expression, unknown, doubtfulness, underdog, sleeper) |
| poor lookout(expression, unknown, doubtfulness, underdog, sleeper) |
| poor possibility(expression, unknown, doubtfulness, underdog, sleeper) |
| poor prognosis(expression, unknown, doubtfulness, underdog, sleeper) |
| poor prospect(expression, unknown, doubtfulness, underdog, sleeper) |
| puzzle |
| remote possibility(expression, unknown, doubtfulness, underdog, sleeper) |