Learn how to warn someone naturally with 위험해요 wiheomhaeyo it is dangerous, 넘어질 수 있어요 neomeojil su isseoyo you might fall, and 다칠 수 있어요 dachil su isseoyo you might get hurt.
SeungHyun Na creates practical Korean lessons for beginners who want clear pronunciation, natural phrase usage, and real-life speaking confidence.
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Why Danger-Warning Phrases Matter in Beginner Korean
When you learn Korean, greeting phrases are useful, but safety phrases can be even more urgent in real life. If someone is walking near a wet floor, standing too close to traffic, touching something hot, or moving toward an unsafe place, you need short and clear words. Three useful beginner phrases are 위험해요 wiheomhaeyo it is dangerous, 넘어질 수 있어요 neomeojil su isseoyo you might fall, and 다칠 수 있어요 dachil su isseoyo you might get hurt.
These phrases are not only vocabulary. They are small tools for protecting someone. A warning phrase needs to be clear enough to stop an action, but polite enough not to sound aggressive. Korean makes this especially interesting because the same idea can be expressed as a simple statement, a gentle warning, or a stronger urgent notice. Beginners do not need to memorize every possible form. They only need to understand which phrase describes danger, which phrase describes falling risk, and which phrase describes injury risk.
Why direct translation is not enough
In English, you might say “careful,” “watch out,” “dangerous,” “you could fall,” or “you may get hurt.” Korean has similar meanings, but the natural phrase depends on the situation. 위험해요 wiheomhaeyo it is dangerous points to danger in general. 넘어질 수 있어요 neomeojil su isseoyo you might fall explains a falling risk. 다칠 수 있어요 dachil su isseoyo you might get hurt explains a possible injury.
Why polite warning phrases are safer for beginners
The polite ending in 위험해요 wiheomhaeyo it is dangerous, 넘어질 수 있어요 neomeojil su isseoyo you might fall, and 다칠 수 있어요 dachil su isseoyo you might get hurt makes these phrases useful in many everyday settings. You can use them with people you do not know well, with staff, with classmates, with older people, or with anyone where respectful speech feels safer.
How this lesson connects to speaking confidence
Warning someone can feel stressful because the situation may be fast. That is why short patterns help. If you can say 위험해요 wiheomhaeyo it is dangerous clearly, you already have a useful phrase. If you can add a reason, such as 미끄러워서 넘어질 수 있어요 mikkeureowoseo neomeojil su isseoyo it is slippery, so you might fall, your warning becomes more helpful.
Learn one phrase for general danger, one for falling, and one for injury: 위험해요 wiheomhaeyo it is dangerous, 넘어질 수 있어요 neomeojil su isseoyo you might fall, and 다칠 수 있어요 dachil su isseoyo you might get hurt.
Start with three practical warnings: 위험해요 wiheomhaeyo it is dangerous, 넘어질 수 있어요 neomeojil su isseoyo you might fall, and 다칠 수 있어요 dachil su isseoyo you might get hurt.
The Three Core Korean Warning Phrases
The easiest way to learn danger warnings in Korean is to separate them by function. One phrase identifies danger, one phrase predicts a fall, and one phrase predicts injury. This makes the grammar easier because you are not memorizing random sentences. You are learning how Korean speakers describe risk.
It is dangerous. Use this when the place, object, action, or situation is generally unsafe.
You might fall. Use this when the risk is slipping, tripping, losing balance, or falling down.
You might get hurt. Use this when someone could be injured, burned, cut, hit, or harmed.
Please be careful. Use this with the warning phrase to make your message softer and more complete.
위험해요 wiheomhaeyo it is dangerous
위험해요 wiheomhaeyo it is dangerous is the simplest general warning. It does not explain exactly what will happen, but it tells the listener that the situation is unsafe. This phrase is useful when you need to warn someone quickly or when the danger is obvious from the surroundings.
You can say 거기 위험해요 geogi wiheomhaeyo it is dangerous there when someone is moving toward an unsafe place. You can say 이거 위험해요 igeo wiheomhaeyo this is dangerous when pointing to an object, tool, surface, or situation.
넘어질 수 있어요 neomeojil su isseoyo you might fall
넘어질 수 있어요 neomeojil su isseoyo you might fall is more specific. It focuses on falling. This is useful near stairs, ice, wet floors, slopes, crowded areas, playgrounds, hiking paths, and uneven sidewalks. Because it explains what could happen, it can feel more helpful than a general warning.
A common sentence is 미끄러워서 넘어질 수 있어요 mikkeureowoseo neomeojil su isseoyo it is slippery, so you might fall. This gives the listener a clear reason and a clear result. It is especially useful for learners because the structure is practical and easy to reuse.
다칠 수 있어요 dachil su isseoyo you might get hurt
다칠 수 있어요 dachil su isseoyo you might get hurt is broader than falling. It can refer to many kinds of harm. Someone might touch something hot, use a sharp tool, stand near a moving object, or run in a crowded place. This phrase does not always identify the exact injury, but it clearly warns that the person could be harmed.
If a child is running near a hard surface, you might say 다칠 수 있어요 dachil su isseoyo you might get hurt. If a friend is about to touch a hot pan, you might say 뜨거워서 다칠 수 있어요 tteugeowoseo dachil su isseoyo it is hot, so you might get hurt.
How the phrase ending works
The expression 수 있어요 su isseoyo can or might shows possibility. In warning phrases, it often means “might” or “could.” That is why 넘어질 수 있어요 neomeojil su isseoyo you might fall and 다칠 수 있어요 dachil su isseoyo you might get hurt are useful for explaining possible results before they happen.
Use 위험해요 wiheomhaeyo it is dangerous for general danger, 넘어질 수 있어요 neomeojil su isseoyo you might fall for falling risk, and 다칠 수 있어요 dachil su isseoyo you might get hurt for injury risk.
How to Explain the Type of Danger Clearly
A warning becomes stronger when it tells the listener why something is dangerous. Korean beginners can build useful sentences with a simple pattern: reason first, possible result second. This approach is practical because you can start with common condition words and attach a warning phrase.
Reason + falling risk
Falling warnings often start with a surface condition. The place may be slippery, dark, crowded, steep, or uneven. You do not need a long explanation. A short reason can make your warning clear.
It is slippery, so you might fall. Useful for wet floors, ice, rain, snow, and polished surfaces.
It is dark, so you might fall. Useful at night, in parking lots, stairways, and poorly lit areas.
It is crowded or complicated, so you might fall. Useful in stations, markets, events, and busy streets.
They are stairs, so you might fall. Useful when warning someone near steps or staircases.
Reason + injury risk
Injury warnings often involve heat, sharpness, speed, height, or hard objects. In many real situations, people do not need a detailed medical explanation. They need a fast warning that helps them stop or slow down.
It is hot, so you might get hurt. Useful with soup, pans, heaters, coffee, and hot surfaces.
It is sharp, so you might get hurt. Useful with knives, broken glass, tools, and metal edges.
It is fast, so you might get hurt. Useful near bikes, cars, scooters, or moving machines.
It is high, so you might get hurt. Useful near ladders, balconies, platforms, and playground equipment.
Location + general danger
Sometimes you do not know the exact danger, or you need to warn someone before giving details. In that case, use a location phrase with 위험해요 wiheomhaeyo it is dangerous. This is especially helpful when pointing, gesturing, or speaking quickly.
It is dangerous here. Use when the current place is unsafe.
It is dangerous there. Use when someone is near or going toward danger.
Outside is dangerous. Useful during bad weather or unsafe outside conditions.
The road is dangerous. Useful near traffic, construction, ice, or uneven roads.
Adding a gentle care phrase
A warning can sound softer when you add 조심하세요 josimhaseyo please be careful. For example, 위험해요, 조심하세요 wiheomhaeyo, josimhaseyo it is dangerous, please be careful sounds clear and polite. It gives both the reason and the caring instruction.
The easiest warning pattern is condition plus result: 미끄러워서 넘어질 수 있어요 mikkeureowoseo neomeojil su isseoyo it is slippery, so you might fall.
Politeness, Urgency, and Tone in Korean Warnings
A warning phrase has two jobs. It must be understood quickly, and it must match the relationship. If the danger is immediate, clarity matters most. If the situation is not urgent, politeness and tone help the phrase sound natural. Korean learners should practice both the words and the feeling behind them.
Polite everyday warnings
For most beginner situations, use polite everyday forms: 위험해요 wiheomhaeyo it is dangerous, 넘어질 수 있어요 neomeojil su isseoyo you might fall, and 다칠 수 있어요 dachil su isseoyo you might get hurt. These forms are polite enough for many public and everyday situations.
Formal warning style
In official notices, announcements, or more serious settings, you may see or hear 위험합니다 wiheomhamnida it is dangerous. This sounds more formal than 위험해요 wiheomhaeyo it is dangerous. Beginners do not need to use the formal style often in conversation, but recognizing it is helpful.
You may also hear 넘어질 수 있습니다 neomeojil su itseumnida you may fall or 다칠 수 있습니다 dachil su itseumnida you may get hurt in more formal or official contexts. These forms are useful to recognize, especially in public announcements, safety signs, and formal instructions.
Casual warning style
With close friends or younger people, you may hear 위험해 wiheomhae it is dangerous, 넘어질 수 있어 neomeojil su isseo you might fall, and 다칠 수 있어 dachil su isseo you might get hurt. These are casual. They can sound caring in the right relationship, but too familiar with strangers.
Urgent tone without sounding rude
In an urgent moment, you can say a warning quickly and firmly. Korean speakers may also repeat a phrase or add a short attention word. For example, 잠깐만요, 위험해요 jamkkanmanyo, wiheomhaeyo wait a moment, it is dangerous can stop someone before they move forward. The phrase stays polite, but the tone communicates urgency.
Another useful expression is 조심하세요, 다칠 수 있어요 josimhaseyo, dachil su isseoyo please be careful, you might get hurt. This structure begins with a caring instruction and follows with a reason. It sounds clear without being harsh.
Polite warning phrases are safest for beginners. Use 위험해요 wiheomhaeyo it is dangerous for everyday speech and recognize 위험합니다 wiheomhamnida it is dangerous as a formal warning style.
Situation-Based Korean Warning Patterns
Real warnings usually happen in specific places. You may be on a road, near stairs, in a kitchen, at a station, in a classroom, or outside in bad weather. Instead of memorizing long sentences, learn flexible patterns that you can adjust to the situation.
Road and traffic warnings
Traffic warnings need to be short because the risk can change quickly. If someone is stepping toward a road or not noticing traffic, use direct and clear phrases.
There are many cars, so it is dangerous. Useful near busy roads and parking lots.
The road is dangerous. Useful when the road condition or traffic is unsafe.
Please watch out for cars. Simple, natural, and very useful.
If you run, you might get hurt. Useful when someone is running near traffic or a crowded area.
Stairs, wet floors, and slippery places
Falling warnings are common in everyday life. They are useful in homes, stations, restaurants, schools, hotels, stores, and outdoor paths. The key phrase is 넘어질 수 있어요 neomeojil su isseoyo you might fall.
The floor is slippery. This describes the condition clearly.
You might fall. This explains the possible result.
Please be careful on the stairs. Useful near stairways and steps.
Please walk slowly. A helpful instruction after giving a warning.
Kitchen, hot objects, and sharp tools
In kitchens, the risk is often heat or sharpness. You can warn with 다칠 수 있어요 dachil su isseoyo you might get hurt because the exact injury could be a burn, cut, or other harm.
It is hot. A very short warning for soup, pans, cups, and surfaces.
If you touch it, you might get hurt. Useful for hot, sharp, or unsafe objects.
The knife is sharp. Useful in cooking or tool-related situations.
You might hurt your hand. Specific and easy to understand.
Children, friends, and gentle warnings
When speaking to a child or close friend, the tone can be softer or more direct. Still, learners should be careful with casual speech. If you are not sure, stay polite.
Please do not run. A polite way to prevent risk before it happens.
You might get hurt. A simple reason after a warning.
You might fall. Useful when someone is running, climbing, or walking carelessly.
Please do it slowly. A calm instruction that reduces risk.
Situation-based warnings are easiest when you combine place, condition, and possible result: 바닥이 미끄러워요 badagi mikkeureowoyo the floor is slippery plus 넘어질 수 있어요 neomeojil su isseoyo you might fall.
Common Beginner Mistakes When Warning Someone in Korean
Warning phrases are practical, but beginners can make mistakes by using a phrase that is too vague, too casual, or too literal. These mistakes are easy to fix once you understand the role of each phrase.
Mistake 1: Using only one warning phrase for every situation
If you only say 위험해요 wiheomhaeyo it is dangerous every time, people may understand the general warning, but they may not know exactly what to avoid. If the risk is falling, say 넘어질 수 있어요 neomeojil su isseoyo you might fall. If the risk is injury, say 다칠 수 있어요 dachil su isseoyo you might get hurt.
Mistake 2: Sounding too casual in a public situation
Casual forms such as 위험해 wiheomhae it is dangerous, 넘어질 수 있어 neomeojil su isseo you might fall, and 다칠 수 있어 dachil su isseo you might get hurt can be natural with close people, but they are not the safest default for beginners. Use polite forms first unless the relationship clearly allows casual speech.
Mistake 3: Over-explaining during a quick warning
When the danger is immediate, a short phrase is better than a long sentence. Say 위험해요 wiheomhaeyo it is dangerous or 잠깐만요 jamkkanmanyo wait a moment first. After the person stops, you can explain: 넘어질 수 있어요 neomeojil su isseoyo you might fall.
Mistake 4: Forgetting to say what could happen
A strong warning often includes a result. Instead of only saying that something is bad, explain the possible outcome. 뜨거워요 tteugeowoyo it is hot is useful, but 뜨거워서 다칠 수 있어요 tteugeowoseo dachil su isseoyo it is hot, so you might get hurt is clearer.
Mistake 5: Depending only on romanization
Romanization helps you begin, but your long-term goal should be to recognize Korean writing directly. Read the Korean expression first, check the romanized pronunciation second, and remember the English meaning third. For example, learn 위험해요 first, then wiheomhaeyo, then it is dangerous.
Practice these warning pairs out loud: 위험해요 wiheomhaeyo it is dangerous, 넘어질 수 있어요 neomeojil su isseoyo you might fall, and 다칠 수 있어요 dachil su isseoyo you might get hurt. Then imagine one real place where each phrase would be useful.
The best warning is short, polite, and specific. Use general danger, falling risk, and injury risk differently.
Frequently Asked Questions
Say 위험해요 wiheomhaeyo it is dangerous. This is a polite everyday phrase and a good first warning expression for beginners.
Say 넘어질 수 있어요 neomeojil su isseoyo you might fall. Use it near stairs, wet floors, slopes, ice, or uneven ground.
Say 다칠 수 있어요 dachil su isseoyo you might get hurt. It is useful when the risk is injury, not only falling.
Yes. 위험해요 wiheomhaeyo it is dangerous is polite enough for many everyday situations. For formal signs or announcements, you may see 위험합니다 wiheomhamnida it is dangerous.
수 있어요 su isseoyo can or might shows possibility. In warning phrases, it often means that something might happen, as in 다칠 수 있어요 dachil su isseoyo you might get hurt.
Say 미끄러워서 넘어질 수 있어요 mikkeureowoseo neomeojil su isseoyo it is slippery, so you might fall. This is one of the most practical falling-risk warnings.
Say 잠깐만요, 위험해요 jamkkanmanyo, wiheomhaeyo wait a moment, it is dangerous. This is useful when you need to stop someone quickly but still sound polite.
It is better not to. Casual phrases such as 위험해 wiheomhae it is dangerous are for close relationships. With strangers, use 위험해요 wiheomhaeyo it is dangerous.
Beginners should first memorize polite, flexible phrases before moving into casual or formal versions.
Conclusion: Start with Clear and Polite Danger Warnings
If you remember only three phrases from this lesson, remember 위험해요 wiheomhaeyo it is dangerous, 넘어질 수 있어요 neomeojil su isseoyo you might fall, and 다칠 수 있어요 dachil su isseoyo you might get hurt. These three phrases cover many everyday safety situations.
The most useful learning method is not memorizing a long list. Instead, connect each phrase to a real situation. Use 위험해요 wiheomhaeyo it is dangerous when the whole situation is unsafe. Use 넘어질 수 있어요 neomeojil su isseoyo you might fall when the risk is falling. Use 다칠 수 있어요 dachil su isseoyo you might get hurt when the risk is injury.
Choose one place around you and describe the possible risk in Korean. For example, say 미끄러워서 넘어질 수 있어요 mikkeureowoseo neomeojil su isseoyo it is slippery, so you might fall or 뜨거워서 다칠 수 있어요 tteugeowoseo dachil su isseoyo it is hot, so you might get hurt. This turns vocabulary into real speaking practice.
SeungHyun Na writes beginner-friendly Korean learning content that connects Korean expressions, romanized pronunciation, English meaning, and real-life usage. The goal is to help self-learners understand not only what a phrase means, but also when and how to use it naturally.
Contact: seungeunisfree@gmail.com
This lesson is for general Korean language learning and everyday communication practice. The best expression can change depending on the listener, the urgency of the situation, and the place where the warning is used. For important safety decisions, travel risks, health concerns, workplace rules, or official procedures, it is best to check reliable official information or ask an appropriate professional or institution before acting.
Official romanization principles from the National Institute of Korean Language.
Official Korean and Korean-culture learning materials portal from King Sejong Institute.
Official mobile Korean learning app introduction for beginner to advanced learners.
