Used and loved by millions

Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

MitStanfordHarvardAustralian Nationa UniversityNanyangOxford

i certainly

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "I certainly" is correct and usable in written English.
It can be used to express strong agreement or affirmation in a statement. Example: "I certainly believe that hard work leads to success."

✓ Grammatically correct

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

I certainly was not.

News & Media

The New Yorker

I certainly do not.

I certainly had.

News & Media

The New York Times

And I certainly have.

News & Media

The New York Times

I certainly didn't".

News & Media

The New York Times

I certainly blushed.

News & Media

The New York Times

I certainly can.

News & Media

The New Yorker

I certainly knew hustlers.

I certainly don't know".

News & Media

Independent

I certainly do.

News & Media

The New York Times

"Yes, I certainly would.

Show more...

Expert writing Tips

Best practice

Use "I certainly" to express strong agreement or affirmation, ensuring the context aligns with a confident and unambiguous stance. This phrase adds a layer of conviction to your statements.

Common error

Avoid using "I certainly" in overly casual or informal conversations, as it can sound overly formal or stiff. Opt for simpler expressions like "Definitely" or "Absolutely" in those situations.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

92%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "I certainly" functions as an emphatic affirmation or agreement. It adds weight to the speaker's statement, indicating a strong conviction or belief. Ludwig AI confirms its correctness and usability, supported by numerous examples.

Expression frequency: Very common

Frequent in

News & Media

75%

Science

10%

Formal & Business

5%

Less common in

Academia

3%

Encyclopedias

2%

Wiki

1%

Ludwig's WRAP-UP

In summary, the phrase "I certainly" is a grammatically correct and commonly used expression to convey strong agreement, affirmation, or conviction. Ludwig AI confirms its validity. It is most frequently found in news and media contexts, maintaining a neutral to professional register. While it can be used in various situations, it is crucial to consider the tone and audience to ensure appropriateness. Alternative phrases like "I definitely" or "I absolutely" may be more suitable for informal settings. The phrase effectively adds weight and emphasis to statements across different contexts.

FAQs

How can I use "I certainly" in a sentence?

You can use "I certainly" to express strong agreement or conviction. For example, "I certainly agree with your proposal" or "I certainly hope that things will improve".

What can I say instead of "I certainly"?

You can use alternatives like "I definitely", "I absolutely", or "I surely" depending on the context.

Which is correct, "I certainly" or "Certainly I"?

"I certainly" is the standard and more commonly used phrasing. "Certainly I" is less common and can sound awkward in most contexts.

What's the difference between "I certainly" and "I surely"?

"I certainly" expresses a strong conviction or agreement, while "I surely" often implies an expectation or hope. The nuance lies in the degree of confidence versus anticipation.

ChatGPT power + Grammarly precisionChatGPT power + Grammarly precision
ChatGPT + Grammarly

Editing plus AI, all in one place.

Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.

Source & Trust

92%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: