verbs
smother or suppress
"Stifle your curiosity"
make moist
"The dew moistened the meadows"
deaden (a sound or noise), especially by wrapping
reduce the amplitude (of oscillations or waves)
is a type of (narrower)
lessen the strength of
"The fever weakened his body"
make vague or obscure or make (an image) less visible
"muffle the message"
check; keep in check (a fire)
is a type of (narrower)
slow the growth or development of
"The brain damage will retard the child's language development"
lessen in force or effect
"soften a shock"; "break a fall"