Perigo!

The word Perigo! is one of the most immediate and critical interjections in the Portuguese language. While it functions primarily as a noun meaning 'danger,' when used as an exclamation, it serves as a high-priority alert designed to halt action and command attention. English speakers can think of it as the direct equivalent of shouting 'Danger!' or 'Watch out!' in a high-stakes environment. Its usage spans from physical safety warnings in industrial zones to metaphorical alerts in social or financial contexts. Understanding this word is not just about vocabulary; it is about safety and situational awareness in Lusophone environments. The word carries a sense of urgency that 'Cuidado' (Care/Watch out) might lack in extreme situations. For instance, you might say 'Cuidado' if someone is about to trip, but you shout 'Perigo!' if they are walking toward an open electrical wire.

Environmental Context

You will see this word on yellow and black or red and white signs across Portugal, Brazil, Angola, and Mozambique. It marks high-voltage areas, construction sites, and unstable cliffs. In these contexts, it is an imperative for survival.

In a metaphorical sense, 'Perigo!' can be used to warn someone about a risky decision. If a friend is about to invest all their money in a volatile cryptocurrency, a Portuguese speaker might jokingly or seriously exclaim 'Perigo!' to signal that the risk level is unacceptably high. This versatility makes it a B1-level staple because learners must distinguish between the literal physical threat and the figurative risk. The word derives from the Latin 'periculum,' which originally meant a trial or attempt, but evolved to mean the risk associated with that trial. This history is still felt in the word today; it implies that an action is being taken that could result in failure or harm.

Grammatical Role

As an interjection, 'Perigo!' does not change for gender or number. It stands alone. However, as a noun, it is masculine ('o perigo') and can be pluralized ('os perigos'), though the exclamation is almost always singular.

In coastal regions, especially in Portugal and Brazil, 'Perigo!' is frequently accompanied by flags on beaches. A red flag indicates 'Perigo!' and means you should not enter the water. Here, the word is not just a suggestion; it is often a legal boundary. In the workplace, 'Perigo de Morte' (Danger of Death) is a common sign. Interestingly, in Brazil, you might also see 'Perigo de Vida,' which literally means 'Danger of Life' but is used to mean the same thing—that your life is at risk. This linguistic quirk is a classic point of discussion among Portuguese learners and native speakers alike, highlighting how the word 'Perigo' anchors the most important safety communications in the language.

Social Register

In informal speech, saying 'É um perigo' about a person implies they are a 'troublemaker' or 'dangerous' in a flirtatious or mischievous way, showing the word's flexibility beyond just emergency signs.

Mastering the use of Perigo! involves understanding its transition from a sudden shout to its integration into complex sentence structures. When used as an interjection, it is usually the very first word uttered. It serves to grab the listener's primitive attention centers. However, when we move beyond the exclamation, 'perigo' functions as a masculine noun that requires specific prepositions and articles. The most common structure is 'Há perigo de...' (There is danger of...) followed by a noun or an infinitive verb. This allows the speaker to specify the nature of the threat, which is essential for B1-level communication where precision starts to matter more than just basic survival words.

Common Structure: Noun + Preposition

'Em perigo' (In danger). Example: 'O animal está em perigo.' This is the standard way to describe a state of being threatened.

Another vital usage is the phrase 'correr perigo' (to run danger), which translates to 'to be at risk' or 'to run a risk.' This is a collocated expression where 'correr' does not mean physical running but rather undergoing a process. For example, 'Você corre perigo se for por ali' (You are at risk if you go that way). This is a very natural way for native speakers to warn others. Furthermore, the adjective form 'perigoso' (dangerous) is often used to describe things, but the interjection 'Perigo!' is reserved for the event itself. You wouldn't shout 'Perigoso!' to warn someone of a falling rock; you would shout 'Perigo!' or 'Cuidado!'.

In more advanced settings, you might hear 'pôr em perigo' (to put in danger/to endanger). This is a transitive construction: 'Suas ações puseram a missão em perigo' (Your actions put the mission in danger). Here, 'perigo' acts as the destination of the risk. Understanding these variations—'estar em perigo', 'correr perigo', 'pôr em perigo'—is the hallmark of a B1 learner who can navigate not just immediate physical threats but also discuss abstract risks in business, environment, or personal health. The word is also used in the set phrase 'fora de perigo' (out of danger), common in medical contexts to indicate a patient is stable.

Negation and Absence

'Sem perigo' (Without danger/Safe). While 'seguro' is the word for 'safe', 'esta zona está sem perigo' is a valid way to express the absence of threats.

Formal Usage

In legal documents, 'perigo iminente' refers to 'imminent danger,' a specific threshold for self-defense or emergency intervention.

If you are traveling in a Portuguese-speaking country, Perigo! is a word you will hear and see in very specific, high-stakes environments. The most common location is on the road. Portuguese and Brazilian road signage is very explicit. You might see a sign that says 'Perigo: Curva Acentuada' (Danger: Sharp Curve). In these cases, the word is used to prime the driver's brain for a necessary adjustment in speed or focus. It is also common in public transport announcements, especially in metro systems when someone is standing too close to the yellow line or if there is an obstruction on the tracks.

In the News

Journalists use 'perigo' constantly to describe forest fires (incêndios), floods (cheias), or public health crises. You will hear phrases like 'O perigo de contágio' (The danger of contagion).

In cinema and literature, 'Perigo!' is the quintessential shout of the action hero. Whether it's a character in a Brazilian 'telenovela' warning about a villain's plot or a dubbed Hollywood movie where 'Watch out!' becomes 'Perigo!', it serves as a narrative catalyst. In children's cartoons, it is often used to teach kids about things they shouldn't touch, like stoves or chemicals. This makes it one of the first 'safety' words a Portuguese-speaking child learns, embedding it deeply in the collective consciousness as a signal to stop and look.

You will also hear it in sports, particularly in soccer (futebol) commentary. When an opposing player is near the goal with the ball, the commentator might scream, 'Perigo na área!' (Danger in the penalty box!). This usage is metaphorical but captures the same excitement and threat as a physical hazard. It implies that a goal is likely to happen, putting the defending team 'em perigo.' Similarly, in weather reports, you will hear about 'perigo de tempestade' (danger of storm), which is a cue for citizens to stay indoors. The ubiquity of the word in these varied contexts—from the soccer pitch to the hospital to the highway—shows that 'perigo' is the foundational word for any 'negative potential' in the Lusophone world.

Industrial Signs

'Perigo: Cargas Suspensas' (Danger: Overhead Loads). You'll see this in shipping ports like Santos or Lisbon.

One of the most frequent mistakes English speakers make with Perigo! is confusing it with 'Cuidado!'. While they are often interchangeable in casual conversation, 'Cuidado' is an imperative verb meaning 'Take care' or 'Be careful,' whereas 'Perigo' is a noun meaning 'Danger.' If you see a small puddle on the floor, you say 'Cuidado.' if you see a downed power line, you say 'Perigo!'. Using 'Perigo!' for minor things can make you sound overly dramatic or like you don't understand the severity of the word. Conversely, using 'Cuidado' for a life-threatening situation might not convey enough urgency to a native speaker.

Adjective vs. Interjection

English speakers often try to use the adjective 'perigoso' (dangerous) as a warning. In Portuguese, we shout the noun 'Perigo!'. Shouting 'Perigoso!' sounds like you are just describing the situation rather than warning someone to stop.

Another tricky area is the 'Perigo de Vida' vs. 'Perigo de Morte' distinction. In English, we say 'Danger of Death.' In Brazil, 'Perigo de Vida' is extremely common on signs. A logical learner might think this means 'Danger of Living,' but it actually means 'Danger to one's life.' Don't try to correct a native speaker on this; both are accepted, though grammarians sometimes argue that 'Perigo de Morte' is more logically sound. Just be prepared to see both and know they mean exactly the same thing: stay away or you might die.

Learners also struggle with the verb 'Arriscar' (to risk) vs. the phrase 'Correr perigo.' While 'arriscar' is an active choice (I risk my money), 'correr perigo' is often a passive state (I am in danger). Using 'Eu perigo' is technically a conjugation of the rare verb 'perigar,' but it sounds archaic or overly poetic. Stick to 'Eu corro perigo' or 'Eu estou em perigo' for daily use. Finally, avoid using 'perigo' to mean 'annoyance' or 'problem.' In English, we might say 'That's a danger,' but in Portuguese, 'perigo' is almost always reserved for actual risk, not just a nuisance.

False Friends

Don't confuse 'perigo' with 'prego' (nail). Shouting 'Prego!' in a dangerous situation will only leave people looking for a hammer and a piece of wood.

While Perigo! is the most direct warning, Portuguese offers several alternatives depending on the level of formality and the specific type of threat. Understanding these nuances is key to sounding like a native speaker. The most common alternative is 'Cuidado!' (Care/Caution). As discussed, this is used for less severe situations. Then there is 'Atenção!' (Attention!), which is often found on signs before the word 'Perigo.' It serves as a preamble, telling you to pay attention before the specific danger is named. In a professional or technical setting, you might encounter 'Risco' (Risk).

Perigo vs. Risco

'Perigo' is the source of harm (e.g., a shark). 'Risco' is the probability of that harm happening (e.g., the risk of being bitten if you swim). In safety manuals, 'Risco de choque' is common.

Another synonym is 'Ameaça' (Threat). This is used when the danger is personified or comes from an external force that has the intention to harm. You would say 'Ameaça de bomba' (Bomb threat) rather than 'Perigo de bomba.' In literary or very formal Portuguese, you might see 'Vulnerabilidade' (Vulnerability) or 'Insegurança' (Insecurity), but these lack the immediate punch of 'Perigo!'. For something that is potentially harmful but not quite 'dangerous' yet, 'Precaução' (Precaution) is the word of choice.

Comparison Table

• Cuidado: Everyday caution (tripping, spilling).
• Perigo: Severe physical or abstract harm.
• Risco: Statistical or calculated possibility of harm.
• Ameaça: Intentional or imminent external danger.

In some Brazilian regions, you might hear 'Olha o bicho!' (Look at the beast/thing!) as a very informal, slangy way to shout 'Perigo!' when something unexpected happens. However, this is very localized. In Portugal, 'Pavor' (Dread/Terror) might be used to describe the feeling a danger causes, but it's not a warning. If you are in a car and the driver is going too fast, you might say 'Isso é perigoso' (That is dangerous) or 'Que perigo!' (What a danger!). The latter is a very common idiomatic exclamation used to express shock at someone's risky behavior.

Emergency Commands

In a fire, people shout 'Fogo!' (Fire!). In a robbery, 'Socorro!' (Help!). 'Perigo!' is the general umbrella for everything else that can hurt you.