| Similarity | Rank | |
|---|---|---|
| tougher | 0.798 | 11878 |
| toughest | 0.777 | 14273 |
| hard | 0.744 | 352 |
| Tough | 0.737 | 20450 |
| challenging | 0.733 | 2684 |
| difficult | 0.731 | 660 |
| tricky | 0.710 | 7458 |
| hardest | 0.708 | 8314 |
| dicey | 0.700 | 58201 |
| frustrating | 0.673 | 7113 |
| harder | 0.671 | 3079 |
| rough | 0.669 | 4193 |
| tenacious | 0.667 | 34605 |
| roughest | 0.662 | 69730 |
| tiring | 0.650 | 20727 |
| resilient | 0.644 | 14875 |
| daunting | 0.636 | 10767 |
| stiff | 0.630 | 8909 |
| unforgiving | 0.625 | 34250 |
| good | 0.624 | 117 |
| hard-nosed | 0.624 | 73867 |
| grueling | 0.619 | 27099 |
| nerve-wracking | 0.619 | 59286 |
| disheartening | 0.615 | 36338 |
| bumpy | 0.611 | 24598 |