1) Brake 2) Decrease 3) Diminish 4) Fall 5) Lessen 6) Lose velocity 7) Move more slowly 8) Reduce the speed of 9) Retard 10) Slow 11) Slow down 12) Slow up 13) To go slower 1) Brake 2) Ease off 3) Fishtail 4) Slow 5) Slowdown 6) Slowup 
[v] - lose velocity 2. [v] - reduce the speed of
decelerate, deceleration To diminish the speed of; to cause to go slower.
slow verb lose velocity; move more slowly; `The car decelerated`
[ACT vocabulary] lose velocity; move more slowly