| Similarity | Rank | |
|---|---|---|
| difficult | 0.843 | 2515 |
| extremely_difficult | 0.809 | 93625 |
| be_very_difficult | 0.769 | 37607 |
| a_difficult | 0.745 | 12053 |
| be_extremely_difficult | 0.713 | 97037 |
| more_difficult | 0.704 | 14322 |
| very_hard | 0.650 | 41193 |
| ,_if_not_impossible | 0.637 | 78666 |
| the_most_difficult | 0.633 | 35489 |
| tricky | 0.628 | 23559 |
| impossible | 0.627 | 8196 |
| be_not_easy | 0.622 | 17254 |
| be_very_hard | 0.622 | 91214 |
| frustrating | 0.611 | 15978 |
| difficult_for | 0.604 | 44678 |
| not_easy | 0.602 | 65092 |
| arduous | 0.592 | 48005 |
| be_the_most_difficult | 0.588 | 91080 |
| it_be_difficult | 0.588 | 31149 |
| complicated | 0.574 | 9149 |
| very_dangerous | 0.572 | 73434 |
| it_be_very_difficult | 0.570 | 71675 |
| challenging | 0.566 | 6371 |
| more_challenging | 0.563 | 31394 |
| very_complex | 0.563 | 68176 |