One of my students once asked me, “Why do we say under the weather and not just I’m sick?” It’s a great question, right? It sounds like we’re talking about rain or clouds, but actually, this phrase has nothing to do with the weather at all.
This is a very common English idiom that means you’re not feeling well. It’s a softer, more polite way to say you’re a bit sick, tired, or just not at your best.
In this lesson, you’ll learn what “under the weather” really means, where it came from, how to use it in real life, and how to respond when someone says it to you. Ready?
What Does Under the Weather Mean?

The idiom “under the weather” means you are not feeling well. It can mean you are a little sick, tired, or just not feeling like yourself.
If you say, “I’m under the weather,” people will understand that you need some rest or that you might be catching a cold.
It’s a gentle way to talk about being unwell. You don’t need to say what exactly is wrong.
This idiom is often used when:
- You have a cold or flu.
- You are tired after a long day.
- You feel dizzy or have a headache.
- You just don’t feel good, but not seriously sick.
Examples:
- “I didn’t go to work today because I’m under the weather.”
- “You should go home early if you’re feeling under the weather.”
- “He looked under the weather, so I made him some soup.”
You can use this phrase in many situations. It’s friendly, polite, and sounds very natural in English.
What is the Origin of Under the Weather?
This idiom has an interesting history. It comes from old sailing language used by sailors many years ago. When sailors worked on ships, they often had to deal with strong wind, waves, and rain.
If someone on the ship started to feel sick because of the rough sea, the captain would send them “under the weather” — meaning below the deck, where they could rest and recover away from the bad weather.
So, “under the weather” started as a phrase for sailors who were seasick or unwell during a storm. Over time, people began using it in everyday life to describe anyone who felt sick, not just sailors.
Today, when someone says they’re “under the weather,” it simply means they feel a little unwell, not that they’re hiding from rain or wind.
How to Use Under the Weather?
You can use “under the weather” in many everyday situations. It works in casual conversations with friends, classmates, or coworkers. You don’t need to explain the exact sickness, just say you don’t feel well.
Here are some easy ways to use it:
1. Talking about yourself
- “I think I’ll stay home today. I’m feeling a bit under the weather.”
- “I was under the weather last week, but I feel better now.”
2. Talking about someone else
- “My teacher looked under the weather this morning.”
- “You should call Maya. She’s been under the weather lately.”
3. Giving advice
- “You should drink some warm tea if you’re feeling under the weather.”
- “Get some rest. You sound a bit under the weather.”
It’s a polite, gentle way to talk about being sick without sounding dramatic. You’ll hear native speakers use it often in small talk.
Under the Weather Example Sentences
Now that you know what it means, let’s see how people really use it in everyday English. These short conversations will help you understand when and how to say it naturally.
Pay attention to how each person uses the phrase. After each example, you’ll see a simple explanation that shows what the sentence really means in daily life.
👩🏫 Lucia: Hey, you didn’t come to school yesterday. What happened?
🧑🎓 Mia: I was feeling under the weather, so I stayed in bed all day.
👩🏫 Lucia: You look a bit pale today. Are you okay?
🧑🎓 Tom: Yeah, just under the weather. I think it’s the flu.
👩🏫 Lucia: Is Sarah coming to work today?
🧑🎓 Ben: No, she called in sick. She’s under the weather.
👩🏫 Lucia: Let’s go out for dinner tonight!
🧑🎓 Anna: I wish I could, but I’m a bit under the weather. Maybe tomorrow.
👩🏫 Lucia: You didn’t talk much in class today.
🧑🎓 Leo: Yeah, I’m feeling under the weather. My throat hurts.
Difference Between Under the Weather and Sick

Both “under the weather” and “sick” talk about not feeling well, but they don’t sound exactly the same.
When you say “I’m sick,” it can mean many things. Maybe you just have a small cold, or maybe something more serious. It’s a general word that works in any situation — at school, work, or even at the doctor’s office.
On the other hand, “under the weather” sounds much softer. People use it when they have only a mild sickness. For example, you might use it if you have a slight fever, a bit of a headache, or you just feel tired and off. It’s a friendly, polite way to say you don’t feel great, without worrying anyone.
Think of it like this:
- “Sick” = any kind of illness (small or serious).
- “Under the weather” = a little sick or tired.
Example:
👩🏫 Lucia: You didn’t look so good in class today.
🧑🎓 Tom: Yeah, I’m a bit under the weather, but I’ll be fine.
So, if you want to sound gentle or polite, “under the weather” is the better choice. But if you want to be clear or serious about how bad you feel, “sick” is fine.
How to Respond to Under the Weather?
Remember, when someone tells you they’re “under the weather,” it usually means they’re a little sick, not seriously ill.
You don’t need to ask a lot of questions or act worried. The best response is to be kind and show you care.
You can say something simple like “I hope you feel better soon,” or “That’s too bad, get some rest.” These short, warm replies sound natural and friendly.
If it’s someone close to you, you can offer a little help, like “Do you want me to bring you soup?” or “Let me know if you need anything.” It’s a nice way to show you care without being pushy.
Here are some natural ways to respond:
1. Show sympathy or care
- “Oh, I’m sorry to hear that.”
- “Hope you feel better soon.”
- “Take some rest and drink lots of water.”
2. Offer help or comfort
- “Do you want me to bring you some soup?”
- “Let me know if you need anything.”
3. Keep it simple in casual chats
- “Aw, that sucks. Get well soon!”
- “Yeah, I know the feeling. Rest up!”
Example Conversation:
👩🏫 Lucia: Hey, how are you feeling today?
🧑🎓 Mia: Still a little under the weather.
👩🏫 Lucia: Oh no, I hope you get better soon! Want some tea?
It’s that easy. A short, kind reply is all you need to make someone feel cared for.
Common Mistakes to Avoid
“Under the weather” is a simple phrase, but many learners make small mistakes when using it. Here are the most common ones and how to fix them.
Some students say “feel under weather” and forget the word the. That’s wrong. You always need to say “under the weather.”
❌ I feel under weather today.
✅ I feel under the weather today.
Another mistake is using it for something not related to health. The idiom only describes feeling sick or weak, not being sad, busy, or tired from work.
❌ I was under the weather because my exam was hard.
✅ I was under the weather because I had a cold.
Also, avoid saying “a little bit under the weather today morning” or other strange time phrases. It sounds unnatural. Instead, say “this morning” or “today.”
✅ I felt under the weather this morning.
✅ I’m a bit under the weather today.
And remember, “under the weather” is usually used in informal English. You can say it to friends or coworkers, but not always in serious situations like a doctor’s appointment.
If you keep these small details in mind, you’ll sound much more natural when using the idiom.
Similar English Idioms & Expressions
“Under the weather” isn’t the only way to say you don’t feel well. There are many other expressions that sound natural in different situations. Some are polite, others are more casual.
The most common one is “I’m not feeling well.”
It’s simple and works anywhere — at school, work, or with friends. It sounds polite and clear.
Examples:
- “I’m not feeling well today, so I might skip class.”
- “She wasn’t feeling well yesterday, but she’s okay now.”
Another easy one is “I don’t feel so good.”
This one is more casual and sounds like something you’d say to a friend or family member.
Examples:
- “I don’t feel so good after eating that spicy food.”
- “You don’t look so good. Are you okay?”
You can also say “I’m feeling off today.”
This means you don’t feel like your normal self — maybe you’re tired, dizzy, or low on energy, but not really sick.
Examples:
- “I’m feeling off today. I think I need more sleep.”
- “He’s been feeling a bit off lately, maybe he needs a break.”
All of these phrases are useful in daily life. You can use them just like “under the weather,” depending on who you’re talking to and how bad you feel.
Try Making Your Own Sentences
Now it’s your turn! Practice helps you remember new idioms better. Try making one or two sentences using “under the weather.” You can also use the other expressions you learned in this lesson.
Here are some ideas to get you started:
- Talk about yourself: “I didn’t go out yesterday because I was under the weather.”
- Talk about someone else: “My friend looked under the weather this morning.”
- Use it in a message: “Sorry, I can’t join today. I’m feeling under the weather.”
You can even mix it up with other phrases:
- “I’m not feeling well today.”
- “I feel a bit off this morning.”
Keep it simple and natural. The more you use it, the easier it will sound when you speak.
FAQs
Why do we say “I feel under the weather”?
The phrase comes from old sailing days. When sailors got seasick during storms, they would go below the deck to rest — “under the weather.” Later, people began using it to mean feeling sick in general.
Is “under the weather” an idiom?
Yes. It’s an idiom because the words don’t mean what they literally say. You’re not actually under any weather, it’s just a way to say you feel a bit sick or weak.
Is “under the weather” a British phrase?
It began in British English, but now it’s common in both British and American English. You’ll hear it used naturally all around the world.
Is “under the weather” an old saying?
Yes. It’s been around for hundreds of years, first used by sailors in the 1800s. Even though it’s old, people still use it today in modern conversation.
What is the difference between “under the weather” and “sick”?
“Under the weather” means you’re a little sick or tired, usually something mild. “Sick” is more general and can describe anything from a small cold to a serious illness.
Does “under the weather” mean sad?
Not really. It only describes feeling physically unwell, not emotionally sad. If someone is sad, they might say “I feel down” or “I’m in a bad mood,” not “under the weather.”
Is feeling “under the weather” an excuse?
Sometimes, yes. People might say it when they need to stay home from school or work because they feel a bit sick. It’s a polite way to explain you’re not feeling well.
How do you respond to “under the weather”?
Keep it simple and kind. You can say things like:
“I’m sorry to hear that.”
“Hope you feel better soon.”
“Take some rest and drink lots of water.”
It shows care without making the person uncomfortable.
Now you know what “under the weather” really means and how to use it like a native speaker. The next time you’re not feeling great, try using this idiom — it’ll sound much more natural.
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