1. the quality or state of being unlikely to happen or be true
2. something that is unlikely to happen or be true

Examples

• The improbability of winning the lottery doesn’t stop people from buying tickets.
• Given the weather forecast, the improbability of rain made us plan an outdoor wedding.
• The detective was struck by the improbability of such a coincidence.
• Despite the improbability of success, the team decided to attempt the rescue mission.
• The novel’s plot relied on several improbabilities that made it hard to believe.
• Scientists calculated the improbability of life existing elsewhere in the universe.
• The improbability of finding her lost ring in the ocean was overwhelming.