averter

One who prevents

An averter is someone or something that prevents or turns away an undesirable outcome.

The word appears most often in religious or formal contexts: an averter of evil, an averter of disaster.

It derives from avert, meaning to ward off or prevent.

prevention

blocker

Something that obstructs

suppressant · deflector · stopper · obstructor · neutralizer · countermeasure · prophylactic · safeguard · preclusion · check

protection

guardian

Protective caretaker of another

custodian · sentinel · safeguard · preserver · warden · keeper · watchman · bodyguard · escort · champion

deterrence

deterrent

Thing that discourages action

warning · caution · repellent · intimidation · diversion · distraction · redirection · antidote

Opposites
prevention vs. causation

avertercauser

One who produces effects

instigator · precipitator · initiator · trigger · provocateur

blocking vs. enabling

averterenabler

One who facilitates harmful behavior

facilitator · encourager · fosterer · promoter · abettor

Phrases
Family

avert, averted, averting, averts

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Everyday, not technical · Rated G