1) Brake 1) Largo, compared to adagio 2) Largo, compared to andante 3) Less busy 4) Less hurried 5) Less likely to win the race 6) Less prompt 7) Less rapid 8) Like a runner-up, often 9) More deliberate 10) More dilatory 11) More leisurely 12) More like molasses 13) More poky 14) More slowly 15) Not as busy 
[adv] - more slowly
adverb more slowly