| Similarity | Rank | |
|---|---|---|
| undetermined | 0.776 | 50425 |
| unsuspected | 0.758 | 79365 |
| undiscovered | 0.731 | 34706 |
| mysterious | 0.714 | 6388 |
| unidentified | 0.712 | 21596 |
| presumed | 0.712 | 17103 |
| unrecognized | 0.699 | 41318 |
| unaware | 0.689 | 9120 |
| unexplained | 0.683 | 23838 |
| unknowable | 0.674 | 53536 |
| unseen | 0.667 | 14749 |
| unexplored | 0.666 | 37943 |
| Unknown | 0.662 | 18505 |
| enigma | 0.649 | 37232 |
| enigmatic | 0.647 | 26955 |
| unknowing | 0.645 | 60859 |
| apparent | 0.645 | 4015 |
| obscure | 0.640 | 10473 |
| unrecognised | 0.639 | 95961 |
| unbeknownst | 0.638 | 55494 |
| unacknowledged | 0.638 | 71331 |
| pinpointed | 0.634 | 56466 |
| discovered | 0.634 | 1840 |
| probable | 0.633 | 9018 |
| mistaken | 0.632 | 10071 |