SimilarityRank
very_difficult 0.809 34974
difficult 0.771 2515
be_very_difficult 0.696 37607
be_extremely_difficult 0.694 97037
more_difficult 0.677 14322
a_difficult 0.671 12053
,_if_not_impossible 0.627 78666
impossible 0.626 8196
the_most_difficult 0.617 35489
arduous 0.587 48005
be_the_most_difficult 0.585 91080
be_not_easy 0.579 17254
difficult_for 0.577 44678
the_most_challenging 0.573 54484
time-consuming 0.573 22450
tricky 0.569 23559
daunting 0.567 43508
challenging 0.566 6371
perilous 0.564 65016
more_challenging 0.563 31394
be_not_an_easy_task 0.553 79512
time_consuming 0.550 21184
it_be_difficult 0.548 31149
laborious 0.547 65252
complicated 0.544 9149