intervener
One who steps in
An intervener is someone who intervenes—who steps into a situation to alter its course.
The term appears most often in legal contexts, where an intervener is a third party who petitions to join a lawsuit that may affect their interests: The environmental group was granted status as an intervener in the case.
Also spelled intervenor.
One who resolves disputes
- negotiatorOne who bargains professionally
- mediatorNeutral conflict resolver
- facilitatorNeutral process guide
- go-betweenAgent connecting separate parties
liaison · intermediary · broker · diplomat · peacemaker · conciliator · umpire · referee
Head covers tinted azure
- peacekeeping forceTroops maintaining ceasefire compliance
- observerOne who perceives events
- monitorDisplay or supervisor
- bufferProtective intermediate space
ceasefire · patrol · stabilizer · security force · conflict resolution · peace talks · demilitarized zone · armistice
One who aids another
- rescuerOne who saves others
- benefactorOne who gives aid
- supporterOne who backs another
- providerOne who furnishes things
volunteer · humanitarian · donor · relief worker · first responder · Good Samaritan · assistance · backup
One who enters uninvited
- trespasserUnlawful entrant on property
- gatecrasherUninvited event attendee
- meddlerOne who interferes uninvited
- busybodyIntrusive meddler
uninvited · unwelcome · encroacher · infiltrator · invader · snooper · interferer · nosy parker
One who deliberately undermines
- agitatorOne who foments discord
- obstructorOne who blocks progress
- troublemakerOne who creates discord
- spoilerPremature ending disclosure
destabilizer · instigator · provocateur · wrecker · hindrance · impediment · interference · obstacle
arbitrator
One who resolves disputes
- negotiatorOne who bargains professionally
- mediatorNeutral conflict resolver
- facilitatorNeutral process guide
go-between · liaison · intermediary · broker · diplomat · peacemaker · conciliator · umpire · referee · moderator
blue helmets
Head covers tinted azure
- peacekeeping forceTroops maintaining ceasefire compliance
- observerOne who perceives events
- monitorDisplay or supervisor
buffer · ceasefire · patrol · stabilizer · security force · conflict resolution · peace talks · demilitarized zone · armistice · neutral party
helper
One who aids another
- rescuerOne who saves others
- benefactorOne who gives aid
- supporterOne who backs another
provider · volunteer · humanitarian · donor · relief worker · first responder · Good Samaritan · assistance · backup · reinforcement
interloper
One who enters uninvited
- trespasserUnlawful entrant on property
- gatecrasherUninvited event attendee
- meddlerOne who interferes uninvited
busybody · uninvited · unwelcome · encroacher · infiltrator · invader · snooper · interferer · nosy parker · buttinsky
saboteur
One who deliberately undermines
- agitatorOne who foments discord
- obstructorOne who blocks progress
- troublemakerOne who creates discord
spoiler · destabilizer · instigator · provocateur · wrecker · hindrance · impediment · interference · obstacle · blocker
- court partiesplaintiff, defendant, claimant, respondent, appellant
- deafblindhand-over-hand, hand over hand, Helen Keller, braille display, braille displays
- lawsuit partiesplaintiff, defendant, petitioner, respondent, claimant
- litigantslitigant, plaintiff, defendant, respondent, petitioner
intervenerbystander
One who observes nearby
onlooker · spectator · fence-sitter · abstainer · do-nothing
intervenerprincipal
Chief school administrator
disputant · combatant · belligerent · protagonist · litigant
- divine interventionGodly action in affairs
- family interventionGroup effort to help someone
- diplomatic interventionFormal governmental conflict resolution
- military interventionUse of troops abroad
- medical interventionClinical action treating illness
- foreign interventionExternal power's domestic involvement
intervene, intervention, intervening, intervened, intervenes, interventionist, nonintervention, intervenor, interventionists