“I totally agree” and “I completely agree” are both common ways to show strong agreement in English. They are very close in meaning, and in many everyday situations, you can use either expression without changing the basic message. For example, “I totally agree with you” and “I completely agree with you” both mean that you strongly share the other person’s opinion.
The main difference is usually tone and emphasis, not grammar or meaning. “Totally” often sounds more conversational, relaxed, and natural in casual speech. “Completely” can sound slightly more formal or deliberate and emphasizes that there is no disagreement at all. However, these are tendencies rather than strict rules. Both expressions are correct in American and British English and are widely understood.
Quick Answer
“I totally agree” and “I completely agree” both express strong agreement. “Totally” is often more casual and conversational, while “completely” can sound slightly more formal and emphasizes full agreement. In everyday English, either expression is usually natural and correct.
Why Do People Confuse “I Totally Agree” and “I Completely Agree”?
People confuse these expressions because totally and completely are both adverbs that can emphasize the verb agree.
Compare:
- I totally agree with you.
- I completely agree with you.
Both sentences communicate strong agreement. There is no major difference in the basic message.
The distinction becomes more noticeable when you consider the speaker’s tone, context, and degree of emphasis.
“Totally” often feels more spontaneous:
“That movie was amazing.”
“I totally agree!”
“Completely” can sound a little more measured:
“Your explanation is completely correct.”
Still, neither word is limited to only one situation.
First Word: “Totally”
Totally means completely, entirely, or to the full extent.
When used with “agree,” it emphasizes that you strongly share someone’s opinion.
Examples
- I totally agree with your point.
- I totally agree that education is important.
- I totally agree with her decision.
In casual conversation, “I totally agree!” can sound friendly, enthusiastic, and natural.
Tone of “Totally”
“Totally” is especially common in:
- Casual conversations
- Friendly discussions
- Text messages
- Social media
- Informal speech
For example:
“We should leave early to avoid traffic.”
“I totally agree.”
Here, “totally” makes the response sound natural and conversational.
Second Word: “Completely”
Completely means fully, entirely, or without anything missing or left out.
With “agree,” it shows that your agreement is complete.
Examples
- I completely agree with your argument.
- I completely agree with this approach.
- I completely agree that we need more time.
“Completely” can work especially well when the situation is more serious, professional, or carefully expressed.
For example:
“I completely agree with the recommendation in this report.”
That sounds natural in a professional setting.
Tone of “Completely”
“Completely” can sound:
- Neutral
- Strong
- Deliberate
- Professional
- Slightly more formal than “totally”
However, it is also perfectly normal in everyday conversation.
I Totally Agree vs I Completely Agree: Comparison Table
| Feature | I Totally Agree | I Completely Agree |
|---|---|---|
| Basic meaning | Strong agreement | Full/strong agreement |
| Grammar | Correct | Correct |
| Tone | Often casual and conversational | Neutral to slightly formal |
| Strength | Very strong | Very strong |
| Everyday speech | Very common | Very common |
| Professional writing | Possible, but less formal | Often a good choice |
| Friendly conversation | Excellent | Excellent |
| American English | Common | Common |
| British English | Common | Common |
| Main difference | More conversational feel | More complete/formal feel |
When Should You Use Each?
Use “I Totally Agree” When:
Choose “I totally agree” when you are having a relaxed conversation or want to sound enthusiastic and natural.
Examples:
- Talking with friends
- Chatting online
- Responding to someone’s opinion
- Casual classroom discussions
- Informal messages
“That restaurant has the best pizza in town.”
“I totally agree!”
Use “I Completely Agree” When:
Choose “I completely agree” when you want to emphasize full agreement or when the context is somewhat formal.
Examples:
- Professional conversations
- Academic discussions
- Formal responses
- Written arguments
- Serious discussions
“I completely agree with your assessment of the situation.”
Can You Use Them Interchangeably?
Yes. In many situations, you can replace one with the other without changing the essential meaning.
I totally agree with you.
and
I completely agree with you.
Both mean:
“I strongly agree with what you are saying.”
The choice mainly depends on the tone you want.
10+ Examples of “I Totally Agree” and “I Completely Agree”
1. Casual Conversation
A: “We should watch a comedy tonight.”
B: “I totally agree!”
This sounds friendly and natural.
2. Professional Discussion
A: “We need to improve communication between the teams.”
B: “I completely agree.”
“Completely” works well in a workplace discussion.
3. Discussing Education
I totally agree that students need regular practice.
This sounds natural in an informal discussion about learning.
4. Giving an Opinion
I completely agree with your opinion about the new policy.
This emphasizes strong agreement.
5. Talking About Health
I totally agree that getting enough sleep is important.
The expression sounds natural in everyday conversation.
6. Academic Discussion
I completely agree with the author’s main argument.
This is appropriate for a classroom or academic discussion.
7. Friendly Text Message
“That was the best part of the movie!”
“I totally agree!”
The casual tone of “totally” fits well.
8. Workplace Conversation
“We should finish this project before Friday.”
“I completely agree.”
The response sounds clear and professional.
9. Giving Advice
I totally agree that you should take a short break.
This sounds supportive and conversational.
10. Serious Discussion
I completely agree that everyone should have an opportunity to express their views.
“Completely” gives the statement a measured tone.
11. Online Conversation
“This book is worth reading.”
“I totally agree!”
Both words would work, but “totally” feels particularly conversational.
12. Formal Opinion
I completely agree with the committee’s recommendation.
This sounds appropriate in a formal context.
Common Mistakes
Mistake 1: Thinking One Is Correct and the Other Is Wrong
Both are grammatically correct.
I totally agree is wrong.
I completely agree is the only correct form.
Both expressions are acceptable.
Mistake 2: Assuming “Totally” Always Means Informal
“Totally” is often conversational, but context matters. It does not automatically make every sentence incorrect or inappropriate.
Mistake 3: Assuming “Completely” Is Only for Formal English
“Completely” is also common in ordinary conversation.
“I completely agree with you.”
There is nothing unnatural about saying this to a friend.
Mistake 4: Using “Agree” Without Understanding the Structure
You can commonly say:
- I agree with you.
- I totally agree with you.
- I completely agree with you.
- I agree with your point.
- I completely agree with your opinion.
Remember that agree with is normally used when identifying the person, idea, opinion, or statement you support.
Memory Trick
Think of the two words this way:
Totally = casual, enthusiastic agreement
Completely = full, emphatic agreement
A simple memory sentence is:
“Totally” feels like a conversation; “completely” emphasizes full agreement.
But remember that this is a useful tendency, not a strict grammar rule.
American vs British English
Both “I totally agree” and “I completely agree” are used in American and British English.
There is no major grammar difference between the two varieties of English here.
You may hear:
I totally agree with you.
in both American and British conversations.
You may also hear:
I completely agree with you.
in both varieties.
The choice is mainly about personal style, context, and the level of emphasis the speaker wants.
Similar Words
Several other expressions can communicate agreement.
I Agree
Simple and neutral:
I agree with your point.
I Strongly Agree
Clearly emphasizes strong agreement:
I strongly agree with this idea.
I Absolutely Agree
Very strong and enthusiastic:
I absolutely agree with you.
I Entirely Agree
Similar to “completely,” although less common in ordinary conversation:
I entirely agree with your conclusion.
I Fully Agree
Means that you agree without reservation:
I fully agree with your assessment.
Exactly
Often used as a short response:
“We need to prepare earlier.”
“Exactly!”
Final Verdict
“I totally agree” and “I completely agree” are both correct and natural expressions of strong agreement.
The difference is mainly one of style and emphasis. “Totally” often sounds more relaxed, conversational, and enthusiastic, while “completely” can sound slightly more formal or deliberate.
If you are talking casually with friends, “I totally agree” is a very natural choice. In a professional, academic, or more serious context, “I completely agree” may feel more suitable.
However, there is no strict rule requiring one expression in a particular situation. Native speakers use both, and the surrounding context determines which sounds best.
FAQs
1. Is “I totally agree” grammatically correct?
Yes. “I totally agree” is grammatically correct and commonly used to express strong agreement, especially in conversational English.
2. Is “I completely agree” correct English?
Yes. “I completely agree” is grammatically correct and means that you fully agree with someone or something.
3. Which is more formal: “I totally agree” or “I completely agree”?
“I completely agree” can sound slightly more formal or deliberate. “I totally agree” is often more conversational. However, both can be used in many different contexts.
4. Is “I totally agree” stronger than “I completely agree”?
Not necessarily. Both can express very strong agreement. The difference is usually about tone and emphasis rather than a fixed difference in strength.
5. Can I use “I totally agree” in academic writing?
It can be grammatically correct, but more neutral expressions such as “I strongly agree” or “I completely agree” may fit formal academic writing better.
6. Can I say “I completely agree with you”?
Yes. “I completely agree with you” is a natural and widely used expression.
7. Do Americans and British people use these expressions differently?
Both expressions are used in American and British English. There is no important regional grammar difference between them.
8. What is another way to say “I totally agree”?
You can say “I completely agree,” “I strongly agree,” “I absolutely agree,” “Exactly,” or “I agree with you.”
Remember This
- I totally agree = strong agreement with a more conversational feel.
- I completely agree = full agreement with a neutral or slightly more formal feel.
- Both are grammatically correct.
- Both are common in American and British English.
- The difference is mainly tone and emphasis, not basic meaning.
- Choose the expression that best matches your context.
Conclusion
“I totally agree” and “I completely agree” are two natural English expressions used to show strong agreement. They are very similar, so learners do not need to worry about making a serious mistake by choosing one over the other. Both clearly communicate that you share another person’s opinion or view.
For casual conversations, “I totally agree” often sounds friendly and spontaneous. For professional, academic, or more measured communication, “I completely agree” can be a comfortable choice. Most importantly, remember that this is a difference in style rather than a strict grammar rule.
Daniel Jack is a language enthusiast and content writer who specializes in synonyms, vocabulary, and word meanings. He creates clear, engaging resources that help readers improve communication and expand their English skills.
