| Similarity | Rank | |
|---|---|---|
| the_most_challenging | 0.808 | 54484 |
| be_the_most_difficult | 0.760 | 91080 |
| difficult | 0.694 | 2515 |
| a_difficult | 0.682 | 12053 |
| the_most_complex | 0.667 | 51425 |
| very_difficult | 0.633 | 34974 |
| extremely_difficult | 0.617 | 93625 |
| the_most_critical | 0.603 | 50569 |
| tough | 0.593 | 4367 |
| the_most_rewarding | 0.592 | 96855 |
| tricky | 0.588 | 23559 |
| more_difficult | 0.585 | 14322 |
| challenging | 0.581 | 6371 |
| the_hard_thing | 0.572 | 86990 |
| the_great_challenge | 0.569 | 32862 |
| probably_one_of | 0.566 | 72637 |
| be_extremely_difficult | 0.565 | 97037 |
| more_challenging | 0.565 | 31394 |
| the_most_dangerous | 0.565 | 40783 |
| daunting | 0.550 | 43508 |
| be_very_difficult | 0.546 | 37607 |
| the_hard_part_of | 0.542 | 73040 |
| the_big_challenge | 0.541 | 19695 |
| the_most_important | 0.539 | 3938 |
| the_hard_part | 0.529 | 66943 |