slowlyI got out of bed and walked slowly to the door.
slowGo slower! I can't keep up.
at a slow paceThey are easy hikes, done at a slow pace.
at a slow speedYou only have to hit a pedestrian at a slow speed to kill them.
at slow rateThe economy grew at a slower rate during the second half of the year.
steadilyWe walked steadily past the crowd.
little by littleLittle by little, we're getting results.
step by stepIt's a lot easier to understand if you do it step by step.
progressivelyMy eyesight has got progressively worse over the years.