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to set off

to set off

131 3.1
To cause something to start or happen
  • phrasal verb
  • /sɛt ɔf/
translation icon : provocar
  • The unexpected results from the experiment set off a series of further inquiries.
  • set off an alarm
  • set off a reaction
  • set off fireworks

So you can also see how shame sets off rage, sets off shame sets off rage.

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Examples

  • The hesitation was brief, but it set off warning bells in Sybill's head.

    Fiction book (1999)
  • The sudden noise set off the car alarm, causing everyone to look around.

  • - They set off the alarm.

  • Ultimately, many investments turned bad, which quickly set off a cycle of financial failures.

    Academic text (2002)
  • We could hear car alarms from a block away that were set off by this thing.

  • And that sets off a cascade that results in the release of insulin.

  • Although both measures were swiftly defeated, they set off rumblings across the country.

    Academic text (1998)
  • Gongs go off, firecrackers are set off, and a special flag is raised on the flagpole.

    Fiction book (1991)
  • Her comment about the project deadline set off a discussion among the team about their priorities.

Synonyms

to activate
vsto set off
715 3.6

To make a machine, system, or account start working

is about causing starts more generally, not only making work
to turn on
vsto set off
550 1.0

To make a machine or device start working

is the broader notion of causing starts beyond machines and controls
to set
vsto set off
507 3.2

To cause something to start, often with a strong effect

is the plain action of causing a start without special emphasis
to trigger
vsto set off
422 4.2

To cause something to start or happen

is the general act of causing starts, not only direct initiation
to spark
vsto set off
154 3.4

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

covers starting events generally, not only those from a tiny stimulus
to switch
vsto set off
123 1.0

To make a machine or light start working

is a general cause of starts, not focused on switching actions
to fire up
vsto set off
  • Informal
55 3.5

Turn on a computer or other device so it starts working

is broader, applying to events, reactions, or processes beyond software
to instigate
vsto set off
36 6.9

To cause something bad to start

is neutral, causing starts without implying bad or provoked outcomes
to trip
vsto set off
36 6.5

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

is the wider act of causing starts beyond mechanical trips
to switch on
vsto set off
32 1.6

To make a device like a light start working by pressing a button or moving a switch

covers starting events broadly, not only physical device activation
to set in motion
vsto set off
25 3.5

To make something begin to move or happen

focuses on starting single events rather than extended processes
to touch off
vsto set off
  • US
15 7.4

Make an event or strong reaction start suddenly

is the neutral act of causing a start, without suddenness emphasis
to flip the switch
vsto set off
11 3.5

Cause a sudden change, for example by moving a small control to turn something on

is the general act of causing starts without the quick decisive image
to emit
vsto set off
  • Specialized
9 6.0

Send out an event or signal so other parts can respond

is the general act of causing starts, not limited to signals
to spark off
vsto set off
  • Informal
1 3.9

To cause a sudden event or strong reaction to begin

is broader, covering starts that may be gradual or planned
to trigger off
vsto set off
  • UK
1 5.1

To cause something to start suddenly

describes causing starts more generally, not stressing sudden force
to actuate
vsto set off
  • Specialized
1 7.3

To make a machine start working

is broader, covering events and reactions beyond machines

Antonyms

1.0

To make something end and not continue

2.3

Stop something from happening or someone from doing it

How Forceful

to launch
504 3.7
to trigger
422 4.2
to set off
131 3.1
to cause
1.0
to prompt
217 3.6

Surface Forms

set off infinitive
set off past
set off past participle
setting off present participle
sets off third person singular

Morphology

set + off

The sense 'to counterbalance or compensate' is not directly derivable from 'set' (to place or initiate) + 'off' (away), so an average B1 learner knowing the words would likely not predict this specific meaning. There is a loose metaphorical link (off as neutralizing or cancelling), and particle-verb patterns can signal altered meanings, so the relation is partially transparent but requires prior exposure.

Etymology

Set off may come from lighting a fuse or a firework: you set a light and it goes off with a bang, starting a chain of events. That is why it now means 'to cause something to start' or 'to trigger' an action.