preventive (n.)
- aegis
- antacid
- antidote
- backstop
- barrier
- block
- buffer
- bulwark
- bumper
- contraceptive
- copyright
- counterirritant
- countermeasure
- covering
- curb
- cushion
- dashboard
- defensive
- deterrent
- dodger
- exclusive
- fender
- forbidding
- forestalling
- fostering
- fuse
- goggles
- governor
- guard
- guardian
- guardrail
- handrail
- helmet
- hindrance
- impediment
- inhibition
- inoculant
- inoculum
- insulation
- interlock
- lifeline
- mask
- mudguard
- narrow
- nullifier
- obstacle
- obstruction
- offset
- pad
- padding
- palladium
- patent
- pilot
- preventative
- prevention
- prophylactic
- protection
- remedy
- safeguard
- safety
- screen
- screening
- serum
- shield
- shielding
- suppressive
- umbrella
- vaccine
- windscreen
- windshield
preventive (adj.)
- antacid
- anticipative
- anticipatory
- block
- bumper
- contraceptive
- counteractive
- covering
- custodial
- defensive
- deterrent
- discouraging
- ethnocentric
- exceptional
- exclusive
- forbidding
- fuse
- guard
- hindering
- impeding
- inadmissible
- inhibitory
- insular
- mask
- narrow
- parental
- parochial
- patent
- precautionary
- preclusive
- prescriptive
- preventative
- prohibitive
- prohibitory
- prophylactic
- protecting
- protective
- repressive
- restraining
- restrictive
- screen
- select
- selective
- separative
- snobbish
- suppressive
- tutelary
- umbrella
- vigilant
- watchful
- xenophobic
