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to trigger off

to trigger off

1 5.1
To cause something to start suddenly
  • phrasal verb
  • /ˈtrɪɡər ɔf/
  • UK
translation icon : desencadenar
  • The sudden change in temperature can easily trigger off the fire alarm.

So now you see that that will trigger off and irritate all sorts of tissues at that very specific level and not others.

Examples

  • It was only 26 hours ago in the building you see behind me... that a bizarre, apparently motiveless shooting occurred... which has triggered off an intensive manhunt by Metro Police.

  • It's too late to stop the changes we've triggered off, but we can slow them down by reducing our greenhouse gas emissions, buying us time to study the problem and adapt to the changes.

    Blog text (27)
  • The one who triggered off this whole string of crimes.

  • So now you see that that will trigger off and irritate all sorts of tissues at that very specific level and not others.

  • But eventually some incident serious enough to trigger off an actual court prosecution would occur, perhaps a death, something of unusual seriousness.

  • It triggered off a series of hallucinations.

  • But for now, I think that you'll find a little S-and-M... will be necessary to trigger off a good, healthy series of hallucinations.

  • And here's an ambulance, here's an ambulance siren, and that triggers off a panic attack because of all the associations.

  • The loud noise from the explosion triggered off a chain reaction in the surrounding buildings.

  • Seeing the spider on the wall triggered off her intense fear of arachnids.

Synonyms

to activate
vsto trigger off
715 3.6

To make a machine, system, or account start working

implies a sudden or forceful cause, not just turning on functionality
to trigger
vsto trigger off
422 4.2

To cause something to start or happen

is focused on sudden or forceful initiation rather than any ordinary start
to spark
vsto trigger off
154 3.4

To cause something to start, often an idea or strong feeling

highlights stronger or more forceful beginnings than a simple prompt
to set off
vsto trigger off
131 3.1

To cause something to start or happen

adds a sense of sudden force or intensity to that beginning
to provoke
vsto trigger off
115 3.7

Cause a reaction or feeling

is about sudden or forceful starts of events rather than emotional provocation
to trip
vsto trigger off
36 6.5

To make a switch or device start working by turning it on

is broader, stressing sudden or forceful initiation rather than mechanical action
to precipitate
vsto trigger off
31 7.5

To cause something to happen suddenly before it was expected

stresses immediate, forceful starting rather than merely early timing
to set in motion
vsto trigger off
25 3.5

To make something begin to move or happen

is stronger, implying sudden or forceful starting rather than planned onset
to touch off
vsto trigger off
  • US
15 7.4

Make an event or strong reaction start suddenly

focuses on abrupt or forceful beginnings rather than calm initiations
to spark off
vsto trigger off
  • Informal
1 3.9

To cause a sudden event or strong reaction to begin

is used for starting things with sudden force rather than slow buildup
to actuate
vsto trigger off
  • Specialized
1 7.3

To make a machine start working

is more about causing sudden or forceful starts than technical activation
precipitating
vsto trigger off
  • Formal
6.7

Something that causes a sudden, unexpected event or change

is about causing starts with added force or suddenness rather than gentle causes

Antonyms

2.3

Stop something from happening or someone from doing it

206 2.4

To stop moving or make something stop moving

How Forceful

to trigger off
  • UK
1 5.1
to touch off
  • US
15 7.4
to spark off
  • Informal
1 3.9
to set off
131 3.1
to bring about
203 3.0
to kick off
129 3.5

Surface Forms

trigger off infinitive
triggered off past participle
triggering off present participle
triggers off third person singular

Morphology

trigger + off

The core verb 'trigger' already means 'to cause or start', and the particle 'off' adds the sense of initiating or setting something in motion, so the combined meaning 'to cause something to start' is directly derivable from the parts. This V+particle pattern is a common and predictable composition in English (and has clear equivalents in many languages), so a B1 learner who knows the constituents will understand the MWE.

Etymology

The phrasal verb trigger off comes from the image of pulling a gun's trigger, which makes something happen at once, while off adds the idea of starting or setting something in motion. So, to trigger off something is 'to cause it to start suddenly'.