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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
I was positive
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "I was positive" is correct and usable in written English.
You can use it when expressing certainty or confidence about something in the past. Example: "I was positive that I had submitted the report on time."
✓ Grammatically correct
News & Media
Science
Formal & Business
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
60 human-written examples
The selection intensity (i) was positive in six of the seven cohorts and on average tended to be different from zero (t = 2.01, p = 0.09).
Science
From these 1000 samples, the predicted probability was estimated for each individual IPRAVE farm i as: ρ̅ i = (number of times farm i was positive) / 1000.
Science
I was positive.
News & Media
I was positive of that.
News & Media
I saw it, so I was positive".
News & Media
I was positive that I would be feeling better today.
News & Media
I was positive you were from Kansai," I said.
News & Media
I was positive I beat it this time".
News & Media
"That's when I was positive," Ms. Isabelle-Stark said.
News & Media
"I was positive what I was doing," Mr. Harrison said.
News & Media
The eight years I thought I was positive cost me more than 45 pounds.
News & Media
Expert writing Tips
Best practice
Consider the context: While "I was positive" is generally acceptable, alternatives like "I was certain" or "I was sure" might be more appropriate in formal settings.
Common error
While acceptable, consistently using "I was positive" can sound repetitive. Vary your language by using synonyms such as "I was certain" or "I had no doubt" /s/I+had+no+doubt to add nuance and sophistication to your writing.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
Expressing certainty about a past state or belief. The phrase functions as a clause within a sentence, conveying assurance regarding something in the past. According to Ludwig, the phrase is correct and usable in written English.
Frequent in
News & Media
76%
Science
14%
Formal & Business
3%
Less common in
Encyclopedias
0%
Wiki
0%
Social Media
0%
Ludwig's WRAP-UP
The phrase "I was positive" is a common and grammatically sound way to express certainty about something in the past. As Ludwig AI explains, this phrase conveys confidence. It's frequently used in news and media, but also appears in scientific and business contexts. While perfectly acceptable, consider using synonyms such as "I was certain" or "I had no doubt" to avoid repetition and adapt to more formal tones. Remember to clearly communicate your past conviction effectively and appropriately.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
I was certain
Replaces "positive" with "certain", maintaining a similar level of confidence.
I knew for a fact
Emphasizes knowledge and certainty about something.
I was sure
Uses "sure" instead of "positive", offering a slightly less formal tone.
I was convinced
Suggests a state of being persuaded or completely sure.
I had no doubt
Expresses the absence of doubt, implying certainty.
I felt confident
Shifts from a statement of fact to a description of feeling confident.
I believed firmly
Highlights the strength of belief, similar to being positive.
It was my conviction
Highlights the deeply held belief or certainty of the speaker.
I could swear
Informal way to express a strong belief or certainty.
I ascertained
Indicates a confirmed finding, more formal than "I was positive".
FAQs
What does "I was positive" mean?
The phrase "I was positive" typically means that you were certain or sure about something in the past. It expresses a strong belief or conviction.
What can I say instead of "I was positive"?
You can use alternatives like "I was certain", "I was sure", or "I had no doubt" depending on the context.
Is it appropriate to use "I was positive" in formal writing?
Yes, "I was positive" is generally acceptable in formal writing. However, consider using more formal synonyms like "I was certain" to maintain a professional tone.
How do I use "I was positive" in a sentence?
You can use "I was positive" to express your certainty about a past event or belief, such as, "I was positive that I had locked the door" or "I was positive about my decision".
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested