How to Use the Opposite of ‘formal’ in Writing
If you need to write in a way that is the opposite of formal, you are looking for an informal, casual, or conversational tone. The direct opposite of “formal” in writing is “informal.” Using an informal tone means you choose everyday words, shorter sentences, and a friendly, personal voice. This guide will show you exactly when and how to use informal writing, with clear examples and common mistakes to avoid.
Quick Answer: What Is the Opposite of Formal Writing?
The opposite of formal writing is informal writing. It is used for personal emails, text messages, social media, friendly letters, and some business communication with close colleagues. Informal writing uses contractions (like “don’t” or “it’s”), simple vocabulary, and a direct, personal tone. It feels like a natural conversation rather than a prepared speech.
Formal vs. Informal: A Comparison Table
| Aspect | Formal Writing | Informal Writing (Opposite) |
|---|---|---|
| Tone | Professional, distant, objective | Friendly, personal, subjective |
| Vocabulary | Complex, academic, precise | Simple, everyday, conversational |
| Sentence structure | Long, complex, passive voice common | Short, simple, active voice common |
| Contractions | Avoided | Used freely |
| Personal pronouns | Rare (use “one” or “the reader”) | Common (use “I,” “you,” “we”) |
| Examples | Business reports, academic papers, official letters | Emails to friends, blog posts, social media updates |
When to Use Informal Writing (The Opposite of Formal)
Informal writing is best when you want to connect with your reader on a personal level. Here are the most common situations:
1. Personal Emails and Messages
When writing to a friend or family member, formal language feels unnatural. Use informal language to sound like yourself.
- Formal: “I hope this message finds you well. I am writing to inquire about your availability for lunch next Tuesday.”
- Informal: “Hey! Are you free for lunch next Tuesday?”
2. Casual Business Communication
With coworkers you know well, informal writing builds rapport. It is common in internal chat messages, quick emails, and team updates.
- Formal: “Please find attached the revised budget for your review. Kindly provide your feedback by Friday.”
- Informal: “Here’s the updated budget. Let me know what you think by Friday.”
3. Blog Posts and Social Media
Most blog articles (like this one) use an informal tone to feel approachable. Social media posts are almost always informal.
- Formal: “One should consider the benefits of regular exercise.”
- Informal: “You should try exercising every day. It really works!”
Natural Examples of Informal Writing
Here are real-life examples that show the opposite of formal writing in action.
Example 1: Email to a colleague
“Hi Mark,
Just a quick note – the meeting has been moved to 3 PM. Hope that still works for you. Let me know if not.
Thanks,
Sarah”
Example 2: Text message to a friend
“Hey, running late! Be there in 10 mins. Grab me a coffee?”
Example 3: Blog introduction
“Struggling to write casually? Don’t worry – it’s easier than you think. In this post, I’ll show you how to drop the formal tone and sound like a real person.”
Common Mistakes When Using Informal Writing
Even when you want to be informal, some mistakes can make your writing confusing or inappropriate.
Mistake 1: Being Too Casual for the Situation
Informal writing is not right for every context. Avoid it in job applications, official complaints, academic papers, or emails to senior management.
- Wrong: “Hey boss, can you check my report? Thx!” (in a formal workplace)
- Better: “Hi Mr. Johnson, could you please review my report? Thank you.”
Mistake 2: Using Slang That Confuses the Reader
Slang can make your writing unclear, especially if the reader is not familiar with it.
- Confusing: “That presentation was lit!”
- Clearer: “That presentation was really great!”
Mistake 3: Forgetting Punctuation and Capitalization
Informal does not mean sloppy. Avoid writing in all lowercase or skipping periods.
- Too sloppy: “i dont know what to do”
- Better: “I don’t know what to do.”
Better Alternatives: When to Use Formal Instead
Sometimes you might accidentally write informally when you need a formal tone. Here are situations where you should choose the opposite of informal (formal) writing:
- Job applications: Use formal language in cover letters and resumes.
- Academic writing: Essays, research papers, and reports require a formal tone.
- Official correspondence: Letters to government agencies, lawyers, or official institutions should be formal.
- Professional proposals: When pitching to new clients or investors, stay formal.
Mini Practice: Test Your Understanding
Try these four questions to check if you know how to use the opposite of formal writing.
Question 1: Which sentence is informal?
a) “We would like to invite you to our annual conference.”
b) “Want to come to our conference this year?”
Answer: b) “Want to come to our conference this year?” uses a direct question and a contraction, making it informal.
Question 2: Rewrite this formal sentence in an informal way: “I am writing to inform you that the project has been completed.”
Answer: “Just letting you know – the project is done!”
Question 3: Is this sentence appropriate for an email to your boss? “Hey, can you send me that file? Thx!”
Answer: No. It is too informal for most boss-employee relationships. A better version: “Hi [Name], could you please send me that file? Thanks.”
Question 4: Which word makes this sentence informal? “I don’t think that’s a good idea.”
Answer: The contraction “don’t” makes it informal. The formal version would be “I do not think that is a good idea.”
Frequently Asked Questions
1. Is it ever okay to mix formal and informal writing?
Yes, but be careful. In some contexts, like a friendly business email, you can start with a formal greeting and then switch to an informal tone. For example: “Dear Mr. Lee, I hope you are doing well. Just a quick note about the report – it’s ready for your review.” This mix works when you have a professional relationship but also a personal connection.
2. What is the most common opposite of ‘formal’ in writing?
The most common opposite is “informal.” Other words include “casual,” “conversational,” “friendly,” and “personal.” “Informal” is the standard term used in writing guides and style manuals.
3. Can I use informal writing in a business email?
Yes, but only with colleagues you know well or in companies with a casual culture. When in doubt, start formal and adjust based on how the other person writes to you. Never use informal writing with a new client or a senior executive you have not met.
4. How do I know if my writing is too informal?
Read your writing out loud. If it sounds like you are talking to a close friend, it might be too informal for a professional setting. Also, check for slang, contractions, and personal opinions. If you are unsure, ask a colleague or use a formal tone to be safe.
For more help with opposite words and writing styles, explore our Writing with Opposites section. You can also learn about Common Opposites and Antonyms with Examples to improve your vocabulary. If you have questions, visit our FAQ page or contact us.
