En 15 segundos
- Used for sudden loud noises like alarms or sirens.
- Describes someone suddenly losing their temper and yelling.
- Can mean food has spoiled or gone bad (British).
Significado
While it literally means to explode like a bomb, we use it when an alarm makes a loud noise or when someone suddenly gets very angry.
Ejemplos clave
3 de 7Waking up for work
My alarm didn't go off this morning, so I was late.
My alarm didn't explode with sound this morning.
A car alarm in the street
That car alarm has been going off for three hours!
That car alarm has been making noise for three hours.
A professional warning
If the pressure gets too high, the safety valve will go off.
The safety valve will activate/release.
Contexto cultural
In the UK, 'go off' is the standard way to say food has spoiled. If you say 'The milk is bad,' people understand, but 'The milk has gone off' sounds much more native. In US urban slang, 'going off' can be a compliment for someone who is doing something with great intensity or skill, like a musician playing a solo. Australians use 'going off' to describe a party or a place that is very exciting and crowded. If a club is 'going off,' it's the place to be. In international business English, 'going off' is often used to describe a speaker who has lost focus on the main topic, usually as 'going off on a tangent'.
The 'On' Rule
Always use 'on' if you are naming the person someone is angry at. 'He went off ON his boss.'
Not for Lights
Never say 'The lights went off' to mean a power cut. Use 'The lights went out.'
En 15 segundos
- Used for sudden loud noises like alarms or sirens.
- Describes someone suddenly losing their temper and yelling.
- Can mean food has spoiled or gone bad (British).
What It Means
Go off is a bit of a linguistic chameleon. Its most common job is describing things that suddenly make a loud noise. Think of your morning alarm clock or a fire siren. It also describes a literal explosion, like a firework or a bomb. In a social sense, it means someone has completely lost their cool. They have 'exploded' with words or anger. It is sudden, loud, and usually catches everyone by surprise.
How To Use It
You use it as a phrasal verb. The word go changes based on time. You can say your alarm goes off every morning at 7 AM. If it happened yesterday, you say it went off. When talking about people, you say someone went off on someone else. This means they yelled at them. It is a very active phrase. It implies a sudden shift from silence to noise or from calm to chaos.
When To Use It
Use it when your phone rings in a quiet movie theater. Use it when you are telling a story about a car alarm that kept you awake. It is perfect for describing a friend who finally told their boss what they really think. You can also use it for food! In British English, if milk goes off, it means it has spoiled and smells terrible. It covers a lot of ground in daily life.
When NOT To Use It
Do not use it for a slow increase in sound. It must be sudden. If you are in a very formal legal meeting, avoid using go off to describe a person's anger. Instead, use 'became agitated.' Also, do not use it to mean 'leaving' a place in American English. While you can 'go off' to college, it sounds a bit old-fashioned. Stick to the 'noise' or 'anger' meanings for modern conversations.
Cultural Background
This phrase reflects the industrial and military history of English. It originally described gunpowder or cannons firing. Over time, we brought that 'explosive' energy into our homes. Now, our electronics 'fire' like cannons. Culturally, it shows how we associate loud noises with sudden action. In modern slang, 'pop off' or 'go off' is even used as a compliment. It means someone is doing something impressively or speaking their truth boldly.
Common Variations
Go off on someone: To yell at someone specifically.Go off without a hitch: When an event happens perfectly with no explosions or problems.A bit off: Used in the UK to describe food that is starting to spoil.Let off: To trigger an explosion or a firework intentionally.
Notas de uso
The phrase is very versatile. In neutral contexts, it refers to alarms. In informal contexts, it refers to anger. Be careful with the British usage regarding food spoilage if you are in the US, as it might cause slight confusion.
The 'On' Rule
Always use 'on' if you are naming the person someone is angry at. 'He went off ON his boss.'
Not for Lights
Never say 'The lights went off' to mean a power cut. Use 'The lights went out.'
British vs American
Use 'gone off' for food in London, but use 'spoiled' or 'gone bad' in New York to sound more natural.
Social Media Rants
When you see 'She went off' on TikTok, it usually means she made a very strong, passionate point.
Ejemplos
7My alarm didn't go off this morning, so I was late.
My alarm didn't explode with sound this morning.
Refers to the failure of a programmed sound.
That car alarm has been going off for three hours!
That car alarm has been making noise for three hours.
Used for repetitive, annoying electronic sounds.
If the pressure gets too high, the safety valve will go off.
The safety valve will activate/release.
Used here for mechanical safety triggers.
She totally went off on him in the group chat.
She completely lost her temper at him.
Describes a verbal explosion in a digital space.
The fireworks are about to go off!
The fireworks are about to explode.
Literal use for pyrotechnics.
Don't drink that milk; I think it's gone off.
Don't drink that milk; I think it's spoiled.
Common British usage for expired food.
I'm sorry I went off like that, I've had a stressful day.
I'm sorry I exploded in anger.
An apology for a sudden emotional outburst.
Ponte a prueba
Fill in the correct form of 'go off'.
I was late for work because my alarm didn't ______.
We use the base form 'go off' after the auxiliary 'did not'.
Which sentence uses 'go off' to mean anger?
Select the correct sentence:
The use of 'on me' indicates the anger sense directed at a person.
Complete the dialogue with the correct phrase.
A: Why is everyone so quiet? B: The boss just ______ on the marketing team.
The past tense 'went off' is needed to describe an event that just happened.
Match the sentence to the meaning of 'go off'.
1. The bomb went off. 2. The cheese went off. 3. The siren went off.
1=Explosion, 2=Spoiling, 3=Noise.
🎉 Puntuación: /4
Ayudas visuales
The Three Faces of 'Go Off'
Sound
- • Alarms
- • Sirens
- • Phone alerts
Action
- • Bombs
- • Fireworks
- • Guns
Emotion
- • Rants
- • Shouting
- • Losing temper
Go Off vs. Go Out
Banco de ejercicios
4 ejerciciosI was late for work because my alarm didn't ______.
We use the base form 'go off' after the auxiliary 'did not'.
Select the correct sentence:
The use of 'on me' indicates the anger sense directed at a person.
A: Why is everyone so quiet? B: The boss just ______ on the marketing team.
The past tense 'went off' is needed to describe an event that just happened.
1. The bomb went off. 2. The cheese went off. 3. The siren went off.
1=Explosion, 2=Spoiling, 3=Noise.
🎉 Puntuación: /4
Preguntas frecuentes
10 preguntasYes, but it's less common now. 'He went off to school' means he left for school.
The 'anger' sense is informal and describes rude behavior, but the phrase itself isn't a swear word.
'Explode' is more formal and scientific. 'Go off' is used for the sound and the event in casual speech.
In slang, yes! It can mean they are dancing or performing very well.
It is irregular: 'The alarm went off' (past) and 'The alarm has gone off' (present perfect).
No. 'Turn off' is a deliberate action to stop a machine. 'Go off' is an automatic action of an alarm.
It comes from the idea of a trigger moving 'off' its safety catch.
Only in the phrase 'go off on a tangent' or when discussing safety alarms.
Americans will understand you, but they will think you sound British.
There isn't a direct opposite phrasal verb, but 'stay silent' or 'remain calm' work.
Frases relacionadas
set off
similarTo cause something (like an alarm) to start.
blow up
synonymTo explode or get very angry.
pop off
specialized formTo speak suddenly or angrily (slang).
go out
contrastTo stop burning or shining.
go off on a tangent
builds onTo start talking about something unrelated.
