preventive
preventative
[adjective]
Synonyms:
- hindering, hampering, impeding, obstructive
- protective, counteractive, deterrent, precautionary
[noun]
Synonyms:
- hindrance, block, impediment, obstacle, obstruction
- protection, deterrent, prevention, remedy, safeguard, shield

[TahlilGaran] English Synonym Dictionary ▲

pre‧vent‧ive /prɪˈventɪv/ (also preventative) adjective [only before noun]
[Word Family: adjective: preventable, PREVENTIVE/PREVENTATIVE; verb: prevent; noun: prevention; adverb: PREVENTIVELY/PREVENTATIVELY]
intended to stop something you do not want to happen, such as illness, from happening:
preventive health programs
preventive action/measure
While travelling abroad, take preventive measures to avoid illness.
—preventively adverb

[TahlilGaran] Dictionary of Contemporary English ▲