| relative unknown | 5.27 | There are relative unknowns. | ||
| virtual unknown | 5.13 | He is still a virtual unknown. | ||
| great unknown | 2.30 | The great unknown? | ||
| big unknown | 2.24 | The center is the big unknown. | ||
| political unknown | 1.84 | China grooms political unknown. | ||
| still unknown | 0.92 | Still unknown is what help Wilson or Brown can expect from Washington, D.C. | ||
| biggest unknown | 0.86 | The biggest unknown remained the voters. | ||
| complete unknown | 0.72 | He was a complete unknown. | ||
| the unknown | 0.72 | The other unknown is the Fed. | ||
| young unknown | 0.53 | The artists include several dozen Cubans, many of them young unknowns. | ||
| greatest unknown | 0.46 | The greatest unknown here is your health. | ||
| only unknown | 0.26 | The only unknown is by how many. | ||
| talented unknown | 0.26 | The talented unknowns, the known talents and the no talents. | ||
| total unknown | 0.26 | A total unknown. |