Não faça isso

Use Não faça isso when you see someone doing something they shouldn't. This could be anything from touching a hot stove to sending a risky email. You can use it with friends, family, or even strangers in certain situations. If someone is about to spill their coffee, you can shout, Não faça isso! (though a bit dramatic, it works!). In a professional setting, you might use it if a colleague is about to share confidential information. It’s about preventing a specific action from happening. Think of it as a real-time intervention tool. It’s like hitting the undo button before the mistake is finalized. It’s your ultimate 'nope!' in verbal form.

This phrase sits comfortably in the neutral to informal zone. With friends and family, it's perfectly normal and sounds natural. You can use it in casual conversations without a second thought. If you're texting your buddy about a bad idea, Não faça isso is ideal. However, in very formal settings, like a high-stakes business meeting with people you barely know, it might sound a tad too direct. You might opt for something softer, like 'Eu sugiro que reconsideremos isso' (I suggest we reconsider this). But for most everyday interactions, it's your reliable, friendly command. It’s the Portuguese equivalent of a friendly 'Hey, don't do that!' rather than a drill sergeant's 'Do NOT do that!'

• Your sibling is about to post an unflattering photo of you online. You yell, Ei, não faça isso!
• You’re watching a movie and someone is about to make a terrible plot-driving decision. You mutter, Não faça isso, personagem burro! (Don't do it, stupid character!).
• A child reaches for a fragile vase. You quickly say, Cuidado, não faça isso.
• Your friend is about to hit 'send' on an angry email. You grab their arm and say, Espera! Não faça isso!
• You see someone trying to bypass a security gate. You might say, Por favor, não faça isso.
• On a cooking show, the chef is about to add way too much salt. The host might exclaim, Não, não, não faça isso!

Use Não faça isso when you need to stop an immediate action. It’s perfect for preventing mistakes, accidents, or regrettable decisions. Think about preventing someone from making a social media faux pas. Or stopping a child from touching something dangerous. It's also great for expressing disapproval of a planned action. If your friend wants to get a questionable tattoo, you can use it. It’s your go-to for minor interventions. It works wonders when you need a quick, decisive response. It's like a verbal emergency brake. Use it when the situation calls for a direct command.

Avoid Não faça isso in situations requiring extreme politeness or deference. If you're speaking to your boss's boss about a sensitive issue, it might be too blunt. Also, don't use it if you're trying to gently persuade someone over a long period. It’s too abrupt for that. It's not ideal for complex negotiations where diplomacy is key. And definitely don't use it if you're asking for a *favor* – that would be like asking someone not to do you a favor! It’s also overkill for situations where the action isn't harmful or important. Telling someone not to breathe? Probably not the best use case. Remember, it's a command, not a polite suggestion.

Learners sometimes forget the isso (this/that). They might just say Não faça, which is grammatically incomplete in many contexts. It leaves the listener wondering, 'Don't do *what*?' Another common issue is using it when a softer phrase is needed. Imagine telling your grandmother, Não faça isso about knitting too tightly – she might feel scolded! It's all about context. Overusing it can also make you sound bossy or impatient. It's like using caps lock in every text message – effective once, annoying repeatedly. Always consider the relationship and the severity of the action.

• Não faças isso (European Portuguese): This is the main difference you'll hear in Portugal. The verb conjugation changes for the informal 'you' (tu). It's the same meaning, just a regional flavor. Think of it like 'y'all' vs 'you guys' in English.
• Não code isso (slang, Brazil): This is a very informal, slangy way to say 'Don't do that,' often used among younger people or in very casual settings. It's like saying 'Don't be extra' or 'Don't do the most.'
• Nega! (slang, Brazil): A super short, informal way to say 'No!' or 'Don't!' often used among close friends, especially when reacting to something silly or a bad idea. It's like a quick 'Nah!'
• Deixa disso (Brazil/Portugal): This means 'Leave it' or 'Stop it,' and is often used to tell someone to drop a subject or stop an annoying habit. It's a bit softer than Não faça isso but serves a similar purpose of stopping an action or behavior.

• Q: Can I use Não faça isso with strangers?
• A: Yes, but cautiously. If someone is about to do something dangerous, like walk into traffic, it's fine. But for minor things, it might seem rude. Gauge the situation!
• Q: Is it rude in formal settings?
• A: It can be. It's quite direct. In formal contexts, phrases like 'Por favor, evite fazer isso' (Please avoid doing that) are safer bets. Always consider your audience.
• Q: What if I want to tell someone not to *have done* something?
• A: You'd use the past tense: Não tenha feito isso (You shouldn't have done that) or Não fizeste isso (You didn't do that - negative statement). Não faça isso is strictly for the present or immediate future.