bit-by-bit
easy
gentle
gradational
gradatory
graduated
in small stages
piecemeal
sloping
step-by-step
stepwise
ambling
cautious
circumspect
claudicant
crawling
creeping
creeping like snail
deliberate
dilatory
even
faltering
flagging
foot-dragging
halting
hobbled
hobbling
idle
inchmeal
indolent
lagging
languid
languorous
lazy
leisurely
limping
lumbering
moderate
poking
poky
regular
relaxed
reluctant
sauntering
shuffling
slack
slothful
slow
slow as death
slow as molasses
slow as slow
slow-crawling
slow-foot
slow-going
slow-legged
slow-moving
slow-paced
antiphon
antiphony
abrupt
consequent
inevitable
partial
progressive
rapid
simultaneous
speedy
subsequent
successive
sudden