In 15 Seconds
- A formal way to say 'if' for low-probability, negative scenarios.
- Used to show preparation without sounding like you are panicking.
- Common in airline safety, legal contracts, and professional emails.
- Separates the speaker from the scary reality of a potential problem.
Meaning
This phrase is your ultimate 'worst-case scenario' cushion. It’s a super polite way to talk about a disaster or a problem without sounding like you’re panicking. You’re basically saying, 'This almost certainly won't happen, but here is the plan just in case.'
Key Examples
3 of 10On an airplane
In the unlikely event that oxygen is required, masks will drop automatically.
In the unlikely event that oxygen is required, masks will drop automatically.
In a legal contract
In the unlikely event that the partnership dissolves, assets will be split 50/50.
In the unlikely event that the partnership dissolves, assets will be split 50/50.
Professional email about a project
In the unlikely event that we miss the deadline, we will provide a full refund.
In the unlikely event that we miss the deadline, we will provide a full refund.
Cultural Background
This phrase became a global staple of English due to the rise of international aviation in the 1950s and 60s. Airlines needed a way to discuss catastrophic failures without scaring passengers or using the word 'crash.' This linguistic gymnastics reflects a core Western corporate value: being prepared for disaster while maintaining an unwavering facade of professional optimism. It is the verbal equivalent of a stiff upper lip.
The Comma Rule
If you start a sentence with this phrase, always put a comma after the event clause. Example: 'In the unlikely event that the sky falls, I'll use my umbrella.'
Don't 'Double If'
Avoid saying 'In the unlikely event if.' This is a major learner error that makes you sound redundant. Use 'that' or nothing at all.
In 15 Seconds
- A formal way to say 'if' for low-probability, negative scenarios.
- Used to show preparation without sounding like you are panicking.
- Common in airline safety, legal contracts, and professional emails.
- Separates the speaker from the scary reality of a potential problem.
What It Means
Have you ever listened to an airline safety briefing? You know the part about the life vest under your seat? They always start with In the unlikely event that. This phrase is a linguistic safety net. It allows you to discuss a negative possibility while pinky-swearing that it probably won't happen. It’s like wearing a helmet to ride a bike. You don't plan on hitting a tree. However, you acknowledge that trees exist. The phrase provides a formal distance. It separates the speaker from the scary reality of the event. It’s the verbal version of a 'break glass in case of emergency' sign. Using it shows you are prepared. It also shows you are optimistic. You aren't saying 'when this happens.' You are saying 'if this happens, and I bet it won't.' It’s the most professional way to be a pessimist.
How To Use It
Grammatically, this phrase acts as a subordinating conjunction. It introduces a dependent clause. You usually place it at the beginning of a sentence. It sets the stage for a backup plan. The structure is simple: In the unlikely event that + [Subject] + [Verb]. For example, In the unlikely event that the server crashes, call Tech Support. You can also put it in the middle of a sentence. Just use a comma before it if it follows the main clause. It works best with the present tense for the 'event' and a modal like will or should for the 'result.' Don't overcomplicate the grammar. Keep it clean. It’s already a long phrase. Adding complex tenses is like putting a hat on a hat. Just state the event clearly. Then give the instructions.
Formality & Register
This is a high-level, formal expression. It lives in the world of B2 English and above. You will find it in contracts. You will hear it in corporate Zoom meetings. It is the language of lawyers and airline pilots. It is definitely not for a casual Friday night. If you tell a friend, In the unlikely event that I want more pizza, I’ll let you know, they might think you’ve been replaced by a robot. Use it when you need to sound authoritative. Use it when you are writing a professional email. It carries a 'business-first' vibe. It tells the listener that you have thought about the risks. It suggests you are a serious person. It’s the tuxedo of conditional phrases. It’s polished, stiff, and very reliable.
Real-Life Examples
Think about the 'Terms of Service' you never read. They are full of this phrase. Websites use it to protect themselves. In the unlikely event that your data is lost, we aren't responsible. It’s also common in event planning. A wedding coordinator might say, In the unlikely event that it rains, we will move the ceremony inside. Even in tech, it’s everywhere. Your phone might show a message: In the unlikely event that the update fails, please plug into a computer. It even pops up in Netflix settings. In the unlikely event that you are still watching, please click 'Continue.' Okay, maybe that’s not a disaster, but Netflix treats it like one! It’s the phrase of choice for anyone who has a 'Plan B.'
When To Use It
Use this when the stakes are high but the probability is low. It’s perfect for insurance policies. It’s great for safety manuals. Use it in professional emails when discussing potential delays. In the unlikely event that the shipment is delayed, we will offer a discount. It shows you are proactive. It builds trust with your clients. They see that you have a plan for everything. Use it during job interviews to discuss your problem-solving skills. In the unlikely event that a project falls behind, I usually do X. It makes you sound like a leader. It shows you don't panic under pressure. You just follow the 'unlikely event' protocol.
When NOT To Use It
Avoid this for things that are actually quite likely. If it’s cloudy, don't say In the unlikely event that it rains. That just sounds delusional. Don't use it for positive events either. In the unlikely event that I win the lottery sounds like you’ve given up on your dreams. It’s specifically for 'bad' or 'inconvenient' things. Also, avoid it in texts to your crush. In the unlikely event that you want to go out sometime is a one-way ticket to the friend zone. It lacks confidence. It’s too cold. It’s too robotic for romance. Keep it for the office. Keep it for the cockpit. Don't take it to the bar.
Common Mistakes
The most common error is adding if to the phrase. People say In the unlikely event if... This is redundant. The phrase already contains the 'if' meaning. It’s like saying 'ATM machine.' The 'M' is already 'Machine.' Another mistake is using will inside the 'event' clause. ✗ In the unlikely event that it will rain → ✓ In the unlikely event that it rains. Save the will for the second part of the sentence. Some learners also use it for very small things. ✗ In the unlikely event that I drop my pen. Unless that pen is made of glass and filled with acid, it’s not an 'event.' Use if for small stuff. Use In the unlikely event that for things that matter.
Common Variations
If this phrase feels too long, you have options. Should it happen that... is a classic formal alternative. In the off-chance that... is a bit more casual but still useful. Just in case... is the king of casual conversation. If you want to sound even more legalistic, try In the event of... followed by a noun. For example, In the event of fire, use stairs. In the UK, you might hear In the improbable event that... but it’s less common. Generation Z might just say If, for some wild reason... but that’s strictly for TikTok. Stick to the original for business. It’s the gold standard.
Real Conversations
Flight Attendant: In the unlikely event that we lose cabin pressure, masks will drop from the ceiling.
Passenger
Manager
Employee
Tech Support: In the unlikely event that your screen stays black after the reset, you'll need a new battery.
Customer
Quick FAQ
Is it always used for bad things? Yes, almost always. It’s used for contingencies and backups. It sounds weird to use it for a surprise party. Can I use it in a text? Only if you are being sarcastic or very professional. Otherwise, it’s too stiff for a quick WhatsApp. Is the that mandatory? In formal writing, yes. In spoken English, people sometimes drop it, but keeping it makes you sound more precise. Does it mean the same as if? Technically yes, but it adds the nuance of 'I really don't think this will happen.'
Usage Notes
Use this phrase for professional 'Plan B' scenarios. It is high-register and very common in safety, legal, and corporate communications. Avoid the 'double if' error and use the simple present tense for the best results.
The Comma Rule
If you start a sentence with this phrase, always put a comma after the event clause. Example: 'In the unlikely event that the sky falls, I'll use my umbrella.'
Don't 'Double If'
Avoid saying 'In the unlikely event if.' This is a major learner error that makes you sound redundant. Use 'that' or nothing at all.
Corporate Optimism
In Western business culture, this phrase is used to avoid negative words like 'fail' or 'crash' directly. It’s a way of being polite about catastrophe.
Present Tense Only
Inside the phrase, stick to the simple present tense. 'In the unlikely event that it snows' is better than 'In the unlikely event that it will snow.'
Examples
10In the unlikely event that oxygen is required, masks will drop automatically.
In the unlikely event that oxygen is required, masks will drop automatically.
The classic usage for safety procedures.
In the unlikely event that the partnership dissolves, assets will be split 50/50.
In the unlikely event that the partnership dissolves, assets will be split 50/50.
Setting clear rules for a 'worst-case' scenario.
In the unlikely event that we miss the deadline, we will provide a full refund.
In the unlikely event that we miss the deadline, we will provide a full refund.
Building trust by showing you have a backup plan.
In the unlikely event that I get eaten by a bear, please tell my mom I love her.
In the unlikely event that I get eaten by a bear, please tell my mom I love her.
Using a formal phrase for a ridiculous scenario creates humor.
In the unlikely event that the app crashes after the update, try clearing your cache.
In the unlikely event that the app crashes after the update, try clearing your cache.
Typical troubleshooting language.
In the unlikely event that we ever stop dancing, check the buffet for us!
In the unlikely event that we ever stop dancing, check the buffet for us!
A playful way to use formal language in a social setting.
In the unlikely event that the speaker is delayed, we will begin the networking session early.
In the unlikely event that the speaker is delayed, we will begin the networking session early.
Standard event management phrasing.
In the unlikely event that your house is damaged by a meteor, you are fully covered.
In the unlikely event that your house is damaged by a meteor, you are fully covered.
Discussing extreme but possible risks.
✗ In the unlikely event if it rains → ✓ In the unlikely event that it rains, we'll stay inside.
✗ In the unlikely event if it rains → ✓ In the unlikely event that it rains, we'll stay inside.
Never use 'if' after this phrase; it's redundant.
✗ In the unlikely event that you will lose your key → ✓ In the unlikely event that you lose your key, call me.
✗ In the unlikely event that you will lose your key → ✓ In the unlikely event that you lose your key, call me.
Use the simple present tense for the event clause.
Test Yourself
Fill in the blank
The standard phrase is `In the unlikely event that`. This indicates a low probability.
Choose the correct option
Which sentence is grammatically correct?
We use simple present (`need`) in the 'that' clause and we don't use `if` because it's redundant.
Find and fix the error
The word `if` is redundant after `In the unlikely event`. Use `that` instead.
🎉 Score: /3
Visual Learning Aids
Formality of 'If' Scenarios
Talking to friends.
If it rains...
Work emails.
Just in case it rains...
Official policy.
Should it rain...
Airline safety/Legal.
In the unlikely event that it rains...
The 'If' Family
Usage Categories
Safety
- • Fire
- • Airplane
- • Chemical spill
Legal
- • Contracts
- • Divorce
- • Bankruptcy
Tech
- • Server crash
- • Data loss
- • App bug
Practice Bank
3 exercisesIn the ___ event that it rains, the party will be indoors.
The standard phrase is `In the unlikely event that`. This indicates a low probability.
Which sentence is grammatically correct?
We use simple present (`need`) in the 'that' clause and we don't use `if` because it's redundant.
Find and fix the mistake:
In the unlikely event if the power goes out, use the flashlight.
The word `if` is redundant after `In the unlikely event`. Use `that` instead.
🎉 Score: /3
Video Tutorials
Find video tutorials on YouTube for this phrase.
Frequently Asked Questions
18 questionsNo, you should definitely avoid that construction. The phrase In the unlikely event already functions as a conditional 'if,' so adding another 'if' is redundant and grammatically incorrect in professional English. Use that instead to introduce your clause.
It depends on the topic you are discussing. If you are talking about a major risk like a server failure or a legal dispute, it is perfectly appropriate for a business email. However, for minor things like missing a lunch meeting, it might sound a bit too dramatic or stiff.
Not really, as the phrase is almost exclusively used for contingencies and problems. If you want to talk about a rare positive event, you might say In the fortunate event that or On the rare occasion that, but these are much less common in everyday business English.
Airlines use it because it sounds professional and calm while acknowledging serious risks. It helps manage passenger anxiety by framing an emergency as an 'unlikely event' rather than a 'dangerous crash.' It's a key part of their liability and safety communication strategy.
In case of is usually followed by a simple noun, like In case of fire. On the other hand, In the unlikely event that is followed by a full sentence with a subject and verb. The latter also emphasizes that the event is very improbable, whereas In case of is more neutral.
No, doing so would sound sarcastic or very strange. If there is a 50% chance of rain, saying In the unlikely event that it rains makes it seem like you are ignoring the weather forecast. Only use it when the probability of the event is truly low.
It is used equally in both British and American English. It is a standard part of International Business English and is found in legal documents and safety manuals across the English-speaking world. There are no major regional differences in how it is used or understood.
Yes, In the unlikely case that is a valid variation, though it is slightly less common than the version with 'event.' Both phrases carry the same meaning and level of formality, so you can choose the one that sounds better in your specific sentence.
You should almost always use the simple present tense. For example, In the unlikely event that he arrives early. Even if you are talking about the future, the 'that' clause in a conditional structure usually takes the present tense to keep the sentence clean and grammatically standard.
To make the sentiment more casual, you should use Just in case or If by any chance. These phrases are much more common in everyday spoken English and won't make you sound like an airline pilot or a lawyer during a friendly conversation over coffee.
Yes, it is perfectly acceptable in academic writing, especially when discussing hypothetical scenarios or risk management. It provides a precise and formal tone that fits well with the requirements of research papers and formal reports where clarity and professional register are highly valued.
Yes, if the phrase and its clause come at the beginning of the sentence, you must use a comma before the main clause. For example: In the unlikely event that the power fails, use the backup generator. This comma helps the reader separate the condition from the action.
Yes, you can say In the unlikely event that you should need help. This adds an extra layer of formality and politeness. It is quite common in older British English or very formal customer service documents to use 'should' in this way to soften the statement.
In this context, 'unlikely' usually means there is a very small probability, perhaps less than 5% or 10%. It is a way of reassuring the listener that while you are prepared for the situation, you do not expect it to occur in the normal course of events.
Yes, but it is less common. For example: We have a backup plan in the unlikely event that the primary server fails. When used at the end, you usually don't need a comma before 'in,' making the sentence flow more directly from the main action to the condition.
Yes, it is generally categorized as B2 (Upper Intermediate) because it involves a complex multi-word structure and requires an understanding of formal register and conditional grammar. Mastering it is a sign that you are moving toward a professional or C1 level of English fluency.
Absolutely! Using very formal language for a silly or everyday situation is a common form of English humor. For example, telling a friend, In the unlikely event that you finish your fries, I am here for you, uses the formal tone to create a playful and funny effect.
Yes, In the event that is neutral about the probability. It just means 'if.' By adding the word 'unlikely,' you are specifically signaling to your audience that you believe the event is improbable, which adds a layer of reassurance or professional distance to the statement.
Related Phrases
Should the need arise
formal versionIf it becomes necessary.
This is another very formal way to discuss a potential future need without using the word 'if'.
On the off-chance
informal versionWith a very slim possibility.
This is a more conversational way to express the same idea of a low-probability event.
Just in case
informal versionAs a precaution.
This is the most common everyday alternative for discussing precautions and backup plans.
In the event of
related topicIf a certain thing happens.
This is a shorter, noun-based version of the phrase used for quick instructions like safety signs.
Provided that
antonymOnly if.
While our phrase is about a 'bad' backup, 'provided that' is about a 'good' condition required for something to happen.
