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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
not pretty sure
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase 'not pretty sure' is correct and can be used in written English.
This phrase can be used when you are uncertain about something but more certain than if you said "I'm not sure". For example: "I'm not pretty sure if the store is open today."
✓ 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
2 human-written examples
Well, I'm not pretty sure, I'm dead certain that's going to happen," he told BBC Radio Manchester.
News & Media
"No, you're not pretty sure," Stansbury says.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
It's unlikely to have been so forthright in the new case if it wasn't pretty sure.
News & Media
Whether this is true or not, I'm pretty sure that it's not a good idea for an artist's mother to control any part of his biography.
News & Media
We're all searching for utopia, but it doesn't exist, and if it does (which it doesn't), I'm pretty sure it's not in Slough or Reading.
News & Media
Whether or not you see the signs is not, I'm pretty sure, the crucial issue.
News & Media
Cho is not (I'm pretty sure) flipping up Wonder Woman's skirt in order to usher in the feminist utopia.
News & Media
I can't tell if he found them annoying or not, but I am pretty sure I wouldn't like to be asked the questions I tossed his way.
News & Media
I don't think they have a claim over it, not in a moral and I am pretty sure not in a legal sense, either — but they are the ones loudly staking the claim.
News & Media
"If West Ham moved in there and we didn't, we're pretty sure we would go out of business so it could be called whatever if you like," he said. .
News & Media
Hey, if it doesn't go well, pretty sure they can rationalize the difficulty of making the jump from double-A to the majors and go back down without having their psyche permanently damaged.
News & Media
Expert writing Tips
Best practice
Consider the tone of your writing; "not pretty sure" is generally informal and best suited for casual communication or when aiming for a conversational style.
Common error
Avoid using "not pretty sure" when the context requires a firm statement of fact. If you possess definite knowledge, express it directly rather than hedging with this phrase.
Source & Trust
88%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "not pretty sure" functions as an adjective phrase modifying the degree of certainty. As noted by Ludwig AI, it suggests uncertainty with a leaning towards a belief. It's used to qualify a statement, indicating a lack of complete conviction.
Frequent in
News & Media
100%
Less common in
Science
0%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "not pretty sure" is a grammatically correct but informal phrase used to express a degree of uncertainty with a slight inclination towards a belief. Ludwig AI indicates that while correct, this phrase is best reserved for informal contexts. Its primary function is to qualify statements and avoid definitive assertions, commonly found in news and media sources aiming for a conversational tone. Alternative phrases such as "not entirely certain" or "somewhat doubtful" can provide similar meanings with varying degrees of formality.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
not absolutely sure
Emphasizes the absence of absolute certainty.
not quite certain
Expresses a similar level of uncertainty but with slightly different wording.
not entirely certain
Slightly more formal and emphasizes a complete lack of certainty.
not dead certain
Uses a more informal tone to express less than complete certainty.
not completely convinced
Highlights a lack of persuasion or belief.
fairly uncertain
Highlights the uncertainty more directly.
somewhat doubtful
Indicates a moderate level of doubt.
rather doubtful
Similar to "somewhat doubtful" but can imply a slightly stronger degree of doubt.
a bit skeptical
Implies a questioning attitude or disbelief.
not fully persuaded
Similar to "not completely convinced", focusing on a lack of complete agreement.
FAQs
When is it appropriate to use "not pretty sure" in writing?
Use "not pretty sure" in informal contexts where you want to convey uncertainty but are leaning towards a particular belief or opinion. It's suitable for expressing a tentative viewpoint without committing to absolute certainty.
What are some alternatives to "not pretty sure"?
You can use alternatives like "not entirely certain", "somewhat doubtful", or "not absolutely sure" depending on the specific nuance you want to convey.
Is "not pretty sure" grammatically correct?
Yes, "not pretty sure" is grammatically correct, although it's considered informal. Ludwig AI confirms that the phrase can be used in written English. It is best suited for informal contexts.
How does "not pretty sure" differ from "not sure"?
"Not pretty sure" implies a stronger inclination or belief than "not sure". While both express uncertainty, "not pretty sure" suggests you have some degree of confidence, while "not sure" indicates a more neutral or undecided position.
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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
88%
Authority and reliability
4.1/5
Expert rating
Real-world application tested