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Meaning of “go off” in the English Dictionary

"go off" in British English

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go off

phrasal verb with go uk   /ɡəʊ/  us   /ɡoʊ/ verb (present participle going, past tense went, past participle gone)
  • (STOP WORKING)

B1 If a light or a machine goes off, it stops working: The lights went off in several villages because of the storm.

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  • (EXPLODE)

C1 If a bomb goes off, it explodes: The bomb went off at midday.
C1 If a gun goes off, it fires: His gun went off accidentally.

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  • (FOOD)

B2 UK If food or drink goes off, it is not good to eat or drink any more because it is too old: This bacon smells a bit funny - do you think it's gone off?
See also

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  • (NOISE)

B2 If a warning device goes off, it starts to ring loudly or make a loud noise: The alarm should go off automatically as soon as smoke is detected. Didn't you hear your alarm clock going off this morning?

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(Definition of go off from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"go off" in American English

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go off

phrasal verb with go  us   /ɡoʊ/ verb (present tense goes, present participle going, past tense went  /went/ , past participle gone  /ɡɔn, ɡɑn/ )
to explode, or to fire bullets: The deer ran away just before the hunter’s gun went off.
If a special signal or an electronic device goes off, it warns people that there is danger or that something is wrong: What do they do if the metal detector goes off?
(Definition of go off from the Cambridge Academic Content Dictionary © Cambridge University Press)
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“go off” in British English

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