SimilarityRank
tough 0.806 4367
be_a_tough 0.721 36164
be_tough 0.644 11759
a_difficult 0.628 12053
it_be_a_tough 0.622 93393
a_harsh 0.601 61862
a_rough 0.573 40332
a_tricky 0.565 79167
a_tight 0.556 30131
a_brutal 0.554 49297
a_sturdy 0.554 74400
toughen 0.551 87538
a_fierce 0.547 59853
a_challenging 0.537 34700
a_tense 0.536 94408
harsh 0.530 10084
a_soft 0.526 17258
rough 0.524 7325
tenacious 0.512 55001
a_strong 0.511 3834
unforgive 0.510 66554
a_very_strong 0.509 38144
a_solid 0.509 10634
unyielding 0.508 87458
a_rigid 0.507 65254