go off

Definition

Verb (intransitive):
- To explode or detonate: To burst or blow apart with sudden violence, typically making a loud noise.
- To leave a place, especially suddenly or for a particular purpose: To depart from a location.
- To stop functioning or operating: To cease working, often referring to electrical devices or systems.
- To happen or proceed in a specified way: To occur or unfold, often used for events.
- To make a sudden loud noise: To sound abruptly, like an alarm.
- To deteriorate in quality or condition: To become worse, often used for food.
- (UK informal) To fall asleep: To go to sleep.

Usage Examples

To explode:
- The bomb was set to go off at noon.
- Fireworks go off with a bang.
To leave:
- She went off to work without saying goodbye.
- He went off to explore the city on his own.
To stop functioning:
- The lights went off during the storm.
- The heating system goes off automatically at night.
To happen/proceed:
- The party went off without any problems.
- How did your presentation go off?
To make a loud noise:
- My alarm clock goes off at 6 a.m. every day.
- A gun went off in the distance.
To deteriorate (food):
- The milk has gone off; don't drink it.
- This meat will go off if it's not refrigerated.
To fall asleep (UK):
- The baby finally went off after much rocking.
- I went off as soon as my head hit the pillow.

Advanced Usage

"to go off on a tangent": To suddenly start talking about a different, often unrelated, subject.
- The lecturer went off on a tangent about his vacation.
"to go off the rails": To start behaving in a strange, uncontrolled, or unacceptable way.
- After he lost his job, his life really went off the rails.
"to go off the deep end": To react in an extremely angry or emotional way; to lose control of one's emotions.
- When she saw the mess, she completely went off the deep end.

Variants and Related Words

Go-off (noun, informal): An explosion or detonation.
- The go-off was heard for miles.
Going off (present participle/gerund):
- The sirens going off woke the entire neighborhood.

Synonyms

Related Phrasal Verbs

Go off with (someone/something): To leave with someone or something, often secretly or unexpectedly.
- He went off with my umbrella by mistake.
Go off on (someone): To criticize or shout at someone angrily.
- My boss went off on me for being five minutes late.

Related Idioms

Go off half-cocked: To act or react hastily without adequate preparation or thought.
- Don't go off half-cocked; we need a proper plan first.
Go off the boil: (UK) To become less intense or active; to lose momentum.
- Interest in the project has gone off the boil recently.

Verb

burst inward
- The bottle imploded
happen in a particular manner
- how did your talk go over?
stop running, functioning, or operating
- Our power went off during the hurricane
go off or discharge
- The gun fired
be discharged or activated
- the explosive devices went off
run away; usually includes taking something or somebody along
- The thief made off with our silver
- the accountant absconded with the cash from the safe

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