like water off a duck's back
undistressing
nonaging
nonresiduary
unrehabbed
none to the worse
unrehabilitated
nonreplacement
unexhumed
nonrecurrent
unrecurrent
irremunerable
unrecoverable
undeteriorating
unboned
nonrefractory
unexacerbated
nonfracturing
nondeteriorating
nonreset
recoverless
unretentive
unrejuvenated
nonreentrant
nonretrenchment
undisbursed
uncured
untreated
nonmutating
untamped
unmeliorated
nonparasitized
unparasitized
unafflicted
uncaponized
unameliorated
unrevetted
zipless
unexpiated
nondysfunctional
nonreticulate
unaggravating
undetoxified
unchangeful
uneffectuated
nonrehabilitative
bum
undisgorged
unsatiating