| still unknown | 0.79 | His party comes later, time and location still unknown. | ||
| face unknown | 0.46 | She too is facing the unknown on Friday. | ||
| cast unknown | 0.39 | The unknown is cast. | ||
| fear unknown | 0.33 | We tend to fear the unknown. | ||
| explore unknown | 0.26 | There are many people who like to explore the unknown. |