like water off a duck's back
inefficaciously
innoxious
nonacute
unacute
nonadverse
uneffectuated
nondegradative
nondeteriorative
unaggravated
nondamaging
unaggravating
zipless
unalleviatedly
nonresidual
unafflicted
nonmutating
ziplessness
nonimmanent
nonvasoreactive
unabrased
unsevere
nonaffected
nonsevere
undegrading
nonimpactive
unharmful
unexacerbated
unexcogitated
nonharmful
ineffectively
nonexacerbating
fairly
undetrimental
effectlessly
unexorbitant
scathelessly
nonmetastatic
uncontagious
nonretroactive
noncontagious
nontemporary
nonemetic
untemporary
unimpactful
unemaciated
unejected
noninseminated
nondetrimental
uninseminated