SimilarityRank
the_most_difficult 0.808 35489
be_the_most_difficult 0.713 91080
the_most_complex 0.688 51425
the_most_rewarding 0.685 96855
challenging 0.681 6371
a_challenging 0.624 34700
the_most_critical 0.618 50569
the_great_challenge 0.614 32862
be_a_challenging 0.613 67849
a_difficult 0.608 12053
more_challenging 0.604 31394
difficult 0.597 2515
the_most_fun 0.587 79793
most_enjoyable 0.576 82323
the_big_challenge 0.575 19695
the_most_interesting 0.574 21878
extremely_difficult 0.573 93625
the_most_exciting 0.566 31212
great_challenge 0.564 59535
very_difficult 0.553 34974
the_most_unique 0.544 74335
the_major_challenge 0.542 66525
tough 0.536 4367
be_a_tough 0.530 36164
probably_one_of 0.529 72637