| Similarity | Rank | |
|---|---|---|
| tough | 0.806 | 4367 |
| be_a_tough | 0.721 | 36164 |
| be_tough | 0.644 | 11759 |
| a_difficult | 0.628 | 12053 |
| it_be_a_tough | 0.622 | 93393 |
| a_harsh | 0.601 | 61862 |
| a_rough | 0.573 | 40332 |
| a_tricky | 0.565 | 79167 |
| a_tight | 0.556 | 30131 |
| a_brutal | 0.554 | 49297 |
| a_sturdy | 0.554 | 74400 |
| toughen | 0.551 | 87538 |
| a_fierce | 0.547 | 59853 |
| a_challenging | 0.537 | 34700 |
| a_tense | 0.536 | 94408 |
| harsh | 0.530 | 10084 |
| a_soft | 0.526 | 17258 |
| rough | 0.524 | 7325 |
| tenacious | 0.512 | 55001 |
| a_strong | 0.511 | 3834 |
| unforgive | 0.510 | 66554 |
| a_very_strong | 0.509 | 38144 |
| a_solid | 0.509 | 10634 |
| unyielding | 0.508 | 87458 |
| a_rigid | 0.507 | 65254 |