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
CEO of Professional Science Editing for Scientists @ prosciediting.com
I so
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "I so" is not standard in written English and may be considered informal or colloquial.
It can be used in casual conversation or informal writing to emphasize a strong feeling or opinion, often followed by an adjective or verb. Example: "I so appreciate your help with this project."
News & Media
Science
Alternative expressions(20)
is equivalent to
in the wishes of
rapidly thereafter
for the immediate future
Very soon
somewhere later
one week before
at the early time
in the next weeks
during the previous years
it is important to remember
to avoid disruption
not yet completed
in accordance with direction from
a couple of books before
if not soon
as excellent as
in a flash
as instructed by the directive
as tall as
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
59 human-written examples
I so totally won!
News & Media
I so miss him".
News & Media
I so do.
News & Media
I so identified with that".
News & Media
But I so respected her.
News & Media
"America, was I so wrong?
News & Media
I so loved E. B.
News & Media
Gurganus: I so appreciate that.
News & Media
I so miss Christine O'Donnell.
News & Media
I so hated it".
News & Media
Am I so craven?
News & Media
Expert writing Tips
Best practice
Consider your audience and the overall tone of your writing. If you are unsure, opt for a more formal alternative like "I really" or "I truly".
Common error
Avoid using "I so" in formal writing, such as academic papers or business reports. This phrase is typically more appropriate for casual conversations or informal correspondence.
Source & Trust
88%
Authority and reliability
3.8/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "I so" is as an intensifier used to emphasize the subsequent verb or adjective. Ludwig AI suggests that the phrase is used in informal contexts.
Frequent in
News & Media
64%
Science
22%
Formal & Business
3%
Less common in
Encyclopedias
0%
Wiki
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "I so" serves as an intensifier, primarily used in informal contexts to convey strong feelings or agreement. According to Ludwig AI, while it's commonly used, it may not be suitable for formal writing. It is recommended to replace it with alternatives such as "I really" or "I truly" in professional or academic settings. While "I so" appears frequently in news and media, its usage should be carefully considered based on the desired tone and audience.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
I really
Replaces "so" with "really" for emphasis.
I very much
Adds "very much" to increase the intensity.
I absolutely
Expresses complete agreement or certainty.
I truly
Uses "truly" instead of "so" to express sincerity or emphasis.
I genuinely
Conveys sincerity and authenticity.
I completely
Emphasizes the totality of the feeling or action.
I seriously
Indicates a strong and earnest feeling.
I deeply
Suggests a profound level of feeling.
I wholeheartedly
Implies full and enthusiastic agreement or support.
Indeed, I
Formal way to show emphasis and agreement.
FAQs
What does "I so" mean?
The phrase "I so" is an informal way to express strong agreement or emphasis, similar to saying "I really" or "I truly". It's often used to intensify a feeling or opinion.
Is it grammatically correct to say "I so"?
While not considered standard formal English, "I so" is commonly used in informal contexts. Ludwig AI considers it "I really" acceptable in casual conversation, but it should be avoided in formal writing.
What can I say instead of "I so" in formal writing?
In formal writing, you can use alternatives like "I really", "I truly", or "I very much" depending on the intended meaning.
How do I use "I so" in a sentence?
"I so" is typically followed by a verb or adjective to emphasize a feeling or action. For example, "I so appreciate your help" or "I was so happy to hear the news."
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.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
88%
Authority and reliability
3.8/5
Expert rating
Real-world application tested