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derailer

derailer

1 8.1
A person who interrupts and makes others lose focus in meetings or plans
  • noun
  • /dɪˈreɪlər/
translation icon : interrumpidor
  • When a few participants began to argue, they became derailers, steering the conversation away from its original purpose.

Examples

  • It's a bit of a conversation killer or derailer.

    Blog text (25)
  • For all the derailers who want to jump in here...

    Blog text (10)
  • It shows such an astounding lack of empathy that dismissiveness is pretty much the kindest response the derailer ought to expect.

    Blog text (28)
  • When people join a discussion like this and start asking for evidence (implying that there is none), they come off as a derailer, troll, or at best an ignorant noob who hasn't done their homework.

    Blog text (2)
  • During the meeting, her comments turned into a derailer, distracting everyone from the main topic.

  • He often acts as a derailer, causing productive discussions to veer off course.

Synonyms

saboteur
vsderailer
20 8.3

A person who damages things on purpose to hurt a group or country

can include nonviolent distraction or accidental causes that break plans
wrecker
vsderailer
9 7.4

A person who damages property on purpose to cause trouble

also applies to nonphysical disruption that makes discussions or plans fail
disruptor
vsderailer
2 6.5

A person who interrupts a meeting or event and causes disorder

causes plans or discussions to fail or become distracted
disrupter
vsderailer
1 6.0

A person who interrupts a meeting or class and disturbs others

may act intentionally or unintentionally to break plans or focus
interrupter
vsderailer
1 4.0

A person or thing that stops the normal flow of activity

breaks flow in a way that can make plans fail or divert attention
distractor
vsderailer
1 5.1

Something that takes your attention away from what you should be doing

can also lead to overall plan failure rather than just shifting attention
muddler
vsderailer
  • Offensive
1 8.2

A person who causes confusion by making things more complicated

does similar harm but may also stop progress deliberately or by chance
person from Porlock
vsderailer
  • Literature
9.9

Someone who interrupts you when you are working or thinking

can more broadly cause plans or discussions to fail or drift
diverter
vsderailer
6.4

A person or thing that draws attention away from something else

can instead cause a plan or discussion to lose direction or fail
obstructor
vsderailer
8.1

A person who stops or delays other people's actions on purpose

may instead distract or derail plans rather than only block them
diversionist
vsderailer
  • NSFW
9.9

A person who damages property or causes trouble on purpose to distract others

can cover both distraction and broader failure, not only deliberate diversion

Antonyms

817 1.0

A person who backs a team or a cause

33 5.1

A person who helps a group work better together

How Disruptive

saboteur
20 8.3
derailer
1 8.1
disruptor
2 6.5
objector
15 5.1
naysayer
28 7.0

Surface Forms

derailer singular
derailers plural

Morphology

derailer = derail (semi-transparent) = de + rail + er

The agentive formation is morphologically regular, but the sense relies on a metaphorical extension of 'derail' from physical trains to disrupting plans or discussions, which may not be obvious to all learners.

Etymology

Derailer comes from de- 'off' and rail 'track'. Used for a person, a derailer is someone who pushes a plan or meeting 'off the rails', so the word shows they make things go away from their intended track.