SimilarityRank
a_tough 0.806 26323
be_tough 0.747 11759
be_a_tough 0.683 36164
hard 0.643 1452
harsh 0.607 10084
toughen 0.601 87538
the_most_difficult 0.593 35489
rough 0.591 7325
tricky 0.585 23559
difficult 0.585 2515
it_be_a_tough 0.579 93393
stiff 0.573 16121
very_hard 0.567 41193
a_difficult 0.556 12053
unforgive 0.554 66554
really_hard 0.540 64966
the_most_challenging 0.536 54484
unyielding 0.536 87458
challenging 0.534 6371
grueling 0.533 94119
gritty 0.532 33205
more_challenging 0.532 31394
hard_as 0.525 79740
soft 0.524 3244
arduous 0.522 48005