blockading
clogging
deterrent
frustrating
frustrative
healthful
hindering
impeding
obstructive
obviating
pre-emptive
precautional
precautionary
preclusive
preemptive
prohibitive
prohibitory
thwarting
aegis
antacid
anticipative
anticipatory
antidote
arm guard
backstop
barrier
block
buffer
bulwark
bumper
contraceptive
copyright
counteractant
counteractive
counteragent
counterirritant
countermeasure
covering
crash helmet
curb
cushion
custodial
dashboard
defensive
deterring
discouraging
dodger
ethnocentric
exceptional
excluding
exclusive
exclusory
face mask
fender
finger guard
foot guard
forbidding
forestalling
fostering
fuse
goggles
governor
guard
guardian
guarding
guardrail
curative
cure
remedy
therapeutic
additional
corrective
diagnostic
legislative
medical
nutritional
operational
preventative
psychiatric
remedial
sanitary
surgical
timely
veterinary
attentive
disincentive
inattentive
incentive
inventive
contributory