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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 assume so
Grammar usage guide and real-world examplesUSAGE SUMMARY
'I assume so' is correct and usable in written English.
You can use 'I assume so' when you don't know for sure, but believe something to be true. Example: "Do you think the rain will stop before the picnic starts?" "I assume so."
✓ Grammatically correct
News & Media
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
11 human-written examples
I assume so," she said.
News & Media
I assume so, yes.
News & Media
"I assume so," he replies.
News & Media
I assume so, but who knows?
News & Media
Asked if she would sell the picture rights, Clifford said: "I assume so.
News & Media
(I assume so, anyway; I say this from a flat in Kent, where there is only cold, cold freeze).
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
49 human-written examples
The new GM has to recognize this, I would assume, so I'm pretty sure he'll make the connection that there is nothing to be gained from 'resurrecting' Sanchez's career.
News & Media
I haven't ever really asked, but I'd assume so.
News & Media
I would assume so.
News & Media
But I would assume so, yes.
News & Media
"I would assume so," he said.
News & Media
Expert writing Tips
Best practice
Use "I assume so" when you want to express a belief or expectation without absolute certainty, especially in response to a question or statement.
Common error
While acceptable, "I assume so" can sound less professional in formal contexts. Consider using alternatives like "I believe so" or "I presume so" for a more refined tone.
Source & Trust
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "I assume so" functions as a declarative statement expressing a belief or expectation. As confirmed by Ludwig AI, it is grammatically correct and usable. It indicates a degree of uncertainty or acceptance of a proposition.
Frequent in
News & Media
79%
Science
10%
Formal & Business
11%
Less common in
Encyclopedias
0%
Wiki
0%
Social Media
0%
Ludwig's WRAP-UP
"I assume so" is a commonly used phrase to express a belief or expectation without complete certainty. Ludwig AI confirms its grammatical correctness and usability across various contexts. While generally neutral in formality, consider alternatives like "I believe so" or "I presume so" for more formal settings. The phrase appears frequently in news and media, reflecting its utility in conveying assumptions in reporting and discussions. Remember to use "I assume so" when you want to express an informed guess or agreement, acknowledging that you don't have definitive proof.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
I suppose so
Slightly more formal than "I assume so", suggesting a less assertive agreement or belief.
I guess so
More casual and indicates a less certain assumption.
I believe so
Emphasizes a stronger degree of belief or conviction.
I expect so
Suggests an anticipation or expectation of something happening.
I imagine so
Indicates a mental picture or envisioning of something being true.
I would think so
Offers a reasoned opinion or expectation.
I take it so
Implies that something is understood or concluded based on available information.
I presume so
Formal and suggests acceptance based on probability or likelihood.
I understand so
Indicates comprehension or having been informed that something is the case.
I gather so
Suggests information has been collected and leads to a certain conclusion.
FAQs
When is it appropriate to use "I assume so"?
It's appropriate to use "I assume so" when you believe something is true but lack definitive proof. It's a polite way to express a belief or expectation, often in response to a question.
What are some alternatives to "I assume so"?
You can use alternatives like "I believe so", "I suppose so", or "I guess so", depending on the context and the level of certainty you want to convey.
Is "I assume so" formal or informal?
"I assume so" is generally considered neutral in formality. While acceptable in most situations, more formal alternatives like "I presume so" or "I expect so" might be preferable in professional or academic settings.
How does the meaning of "I assume so" differ from "I know so"?
"I assume so" indicates a belief or expectation without complete certainty, while "I know so" expresses a firm conviction based on knowledge or evidence. The former implies a degree of uncertainty, whereas the latter signifies certainty.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested