15秒でわかる
- A casual way to say 'I'm sorry' for small mistakes.
- Short for 'That was my fault' or 'My mistake'.
- Best for friends, family, and relaxed social settings.
意味
This is a quick, casual way to say 'I'm sorry' or 'that was my mistake.' It is used for small errors where you want to take responsibility without being too serious.
主な例文
3 / 6Bumping into someone lightly
Oh, my bad! I didn't see you there.
Oh, my bad! I didn't see you there.
Bringing the wrong drink to a friend
I got you a latte instead of tea. My bad!
I got you a latte instead of tea. My bad!
Correcting a small typo in a work chat
I meant 4 PM, not 5 PM. My bad.
I meant 4 PM, not 5 PM. My bad.
文化的背景
In the US, 'My bad' is seen as a sign of 'cool' accountability. It's very common in tech culture and sports. British speakers use 'My bad' due to American influence, but 'Sorry, my fault' or just 'Sorry' is still more traditional. Using a casual apology like 'My bad' (Warii) to a superior is a major social error in Japan. The Brazilian equivalent 'Foi mal' is used almost identically to the American 'My bad' in social settings.
The Shrug
When you say 'My bad,' a small shrug or a raised hand makes it feel more natural and sincere.
Not for Bosses
If your boss is very traditional or strict, avoid 'My bad.' Use 'My apologies' instead.
15秒でわかる
- A casual way to say 'I'm sorry' for small mistakes.
- Short for 'That was my fault' or 'My mistake'.
- Best for friends, family, and relaxed social settings.
What It Means
My bad is a short, punchy way to admit you made a mistake. It basically combines 'my mistake' and 'that's bad' into one quick phrase. You are telling the other person, 'I see what I did, and I take the blame.' It is not a deep apology for breaking someone's heart. It is for those little 'oops' moments in life. Think of it as a verbal shrug that says 'I messed up.'
How To Use It
You can use it as a standalone sentence. If you bump into someone, just say, My bad! and keep walking. You can also add a tiny bit of detail after it. For example, My bad, I forgot to call you. It is very flexible and works well in spoken English or texting. You do not need to change the grammar. It stays exactly the same no matter who you are talking to.
When To Use It
Use this for low-stakes mistakes. If you spill a little water, use it. If you send a text to the wrong person, use it. It is perfect for when you are late by five minutes. It works great at a restaurant if you grab the wrong fork. Use it with friends, siblings, or coworkers you know well. It keeps the mood light and moves the conversation forward quickly.
When NOT To Use It
Never use this for serious problems. If you crash someone's car, My bad will make them very angry. It sounds too casual for big mistakes. Do not use it with your boss during a formal performance review. Avoid using it at a funeral or a wedding if you make a scene. In those cases, a full I am so sorry is much better. Using it for big mistakes makes you look like you do not care.
Cultural Background
This phrase actually started in the world of street basketball in the USA during the 1970s and 80s. When a player made a bad pass, they would shout My bad! to their teammates. It was a way to keep the game moving without a long apology. By the 1990s, it became a huge part of mainstream pop culture. Now, everyone from teenagers to grandmas uses it. It represents the relaxed, informal nature of American social interaction.
Common Variations
You might hear people say My fault which is slightly more standard. Some people just say Oops or Whoops for very physical accidents. In texting, you might see MB as an abbreviation. If you want to be a bit more expressive, you can say Totally my bad. This adds a little more weight to the apology. However, the classic version remains the most popular choice for daily life.
使い方のコツ
This phrase sits firmly in the 'very informal' category. It is perfect for spoken English and texting but should be avoided in any situation where you need to show deep respect or professional gravity.
The Shrug
When you say 'My bad,' a small shrug or a raised hand makes it feel more natural and sincere.
Not for Bosses
If your boss is very traditional or strict, avoid 'My bad.' Use 'My apologies' instead.
Texting
In texts, you can just write 'my bad' in all lowercase to make it even more casual.
Sportsmanship
In any team sport, saying 'My bad' after a mistake is considered great sportsmanship.
例文
6Oh, my bad! I didn't see you there.
Oh, my bad! I didn't see you there.
A classic use for a small physical accident.
I got you a latte instead of tea. My bad!
I got you a latte instead of tea. My bad!
Acknowledging a minor mix-up.
I meant 4 PM, not 5 PM. My bad.
I meant 4 PM, not 5 PM. My bad.
Acceptable in casual professional messaging like Slack or Teams.
Just saw your message now! My bad, I was driving.
Just saw your message now! My bad, I was driving.
Commonly used in digital communication to explain delays.
I just deleted our high score... my bad, guys!
I just deleted our high score... my bad, guys!
Used to soften the blow of a funny or annoying mistake.
I forgot to bring your book back today. My bad, I'll bring it tomorrow.
I forgot to bring your book back today. My bad, I'll bring it tomorrow.
Shows you remember the obligation even though you failed it.
自分をテスト
Which situation is appropriate for 'My bad'?
You accidentally spilled a little coffee on your friend's kitchen counter.
'My bad' is perfect for small, accidental messes with friends.
Complete the dialogue.
A: Hey, you're 10 minutes late! B: ______, I missed the bus.
'My bad' is the most natural casual response for being slightly late.
Match the apology to the situation.
1. Crashing a car. 2. Forgetting a pen. 3. Being 2 minutes late.
Serious things need 'I'm so sorry', small things use 'My bad'.
🎉 スコア： /3
ビジュアル学習ツール
When to say 'My bad'
Small (Say it!)
- • Spilled water
- • Typo
- • 2 mins late
- • Forgot a pen
Big (Don't say it!)
- • Car accident
- • Lost a job
- • Forgot a wedding
- • Broke a bone
練習問題バンク
3 問題You accidentally spilled a little coffee on your friend's kitchen counter.
'My bad' is perfect for small, accidental messes with friends.
A: Hey, you're 10 minutes late! B: ______, I missed the bus.
'My bad' is the most natural casual response for being slightly late.
1. Crashing a car. 2. Forgetting a pen. 3. Being 2 minutes late.
Serious things need 'I'm so sorry', small things use 'My bad'.
🎉 スコア： /3
よくある質問
10 問It's not rude if the mistake is small. It's only rude if you use it for something serious, like breaking someone's phone.
Yes, 'It's my bad' or 'That was my bad' are both perfectly correct and common.
It is originally American, but it is now used all over the English-speaking world.
Only if the email is to a close colleague or a friend. Don't use it in a formal business proposal.
There isn't a direct opposite, but you might say 'Your mistake' (though be careful, that's rude!).
You can say 'No worries,' 'No problem,' or 'It's all good.'
Yes, it is considered informal slang, but it is very 'safe' slang that most people use.
No, you should say 'Totally my bad' or 'Really my bad.'
It's a linguistic shortcut that became popular through sports and movies.
Not at all! It is still one of the most common casual phrases in English.
関連フレーズ
My mistake
similarA slightly more formal way to admit an error.
That's on me
similarTaking full responsibility for a situation.
Oops
similarA reaction to a small accident.
I messed up
builds onAdmitting a larger or more complex mistake.
Mea culpa
specialized formA formal admission of guilt (Latin).
