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
was unsure
Grammar usage guide and real-world examplesUSAGE SUMMARY
'was unsure' is correct and usable in written English.
You can use it to indicate that someone was uncertain about something. For example, "She was unsure how to react to the news."
✓ Grammatically correct
News & Media
Science
Alternative expressions(3)
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
58 human-written examples
Sid was unsure.
News & Media
He was unsure.
News & Media
Even he was unsure.
News & Media
His footing was unsure.
News & Media
I was unsure how.
News & Media
The AFL was unsure.
News & Media
Farida was unsure.
News & Media
She was unsure about this.
News & Media
I was unsure and afraid.
Human-verified similar examples from authoritative sources
Similar Expressions
2 human-written examples
(She said yes; he was unsure).
News & Media
He was unsure if he would live till daybreak.
News & Media
Expert writing Tips
Best practice
When using "was unsure," provide context to clarify the reason for the uncertainty. This helps the reader understand the situation fully.
Common error
Avoid using "was unsure" repeatedly in a short span without providing specific reasons for the uncertainty. This can make your writing seem vague or indecisive.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "was unsure" functions as a copular verb followed by an adjective, describing a state of being. It expresses a condition of uncertainty, doubt, or lack of confidence. As Ludwig AI confirms, this construction is grammatically sound and widely accepted in English.
Frequent in
News & Media
75%
Science
10%
Formal & Business
5%
Less common in
Academia
3%
Wiki
2%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "was unsure" is a common and grammatically correct way to express a state of uncertainty or doubt. As Ludwig AI confirms, it's versatile and can be used in various contexts. It is frequently found in News & Media, but also present in Science publications, indicating its broad applicability. When using "was unsure", providing context helps ensure clarity. While alternatives like "felt uncertain" or "remained doubtful" exist, the choice depends on the specific nuance you wish to convey. Therefore, while "was unsure" is a perfectly acceptable phrase, consider the context to ensure it's the most precise choice for expressing uncertainty.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
was hesitant
Direct synonym, replacing 'unsure' with 'hesitant'.
felt uncertain
Focuses on the feeling of uncertainty, rather than a state of being.
remained doubtful
Emphasizes a continuing state of doubt.
lacked confidence
Highlights the absence of self-assurance.
had reservations
Indicates hesitations or doubts about something.
felt hesitant
Stresses a pause or reluctance due to uncertainty.
was skeptical
Similar to 'expressed skepticism' but focuses on the state of being.
expressed doubt
Shifts focus to the act of voicing uncertainty.
questioned the idea
Highlights the act of scrutinizing or doubting a concept.
expressed skepticism
Indicates a general tendency to doubt or disbelieve.
FAQs
How can I use "was unsure" in a sentence?
You can use "was unsure" to describe a state of uncertainty or doubt. For example, "She "was unsure" whether to accept the job offer."
What are some alternatives to "was unsure"?
Some alternatives include "felt uncertain", "remained doubtful", or "lacked confidence", depending on the specific nuance you want to convey.
Is "was unsure" formal or informal?
"Was unsure" is generally considered neutral and can be used in both formal and informal contexts. However, more formal alternatives might be preferred in academic or professional writing.
What's the difference between "was unsure" and "was uncertain"?
While "was unsure" and "was uncertain" are largely interchangeable, "was unsure" might imply a more personal or subjective lack of certainty, whereas "was uncertain" can also refer to objective ambiguity. Context usually determines the best choice.
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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested