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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
he was certain
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "he was certain" is correct and usable in written English.
You can use it to express someone's strong belief or conviction about something. Example: "Despite the challenges ahead, he was certain that they would succeed in their mission."
✓ Grammatically correct
News & Media
Academia
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
Of that he was certain.
News & Media
He was certain he was being pursued.
News & Media
He was certain this was his son.
News & Media
He was certain he'd failed.
News & Media
But this time, he was certain.
News & Media
But he was certain he was right.
News & Media
He was certain divine intervention delivered victory.
News & Media
He was certain that "the audience doesn't know the difference".
News & Media
He was certain that the audience already existed.
News & Media
He was certain of the value of his new account.
News & Media
"Is this happening?" He was certain the race was over.
News & Media
Expert writing Tips
Best practice
Use the phrase "he was certain" to clearly communicate a character's or subject's strong conviction or belief in a particular situation or outcome.
Common error
Avoid relying solely on "he was certain" to convey a character's feelings. Vary your language with alternatives or show their certainty through actions and dialogue to create a more compelling narrative. Consider using phrases like "he was convinced" or "he had no doubt".
Source & Trust
92%
Authority and reliability
4.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "he was certain" functions as a declarative statement expressing a subject's strong conviction or belief. It's used to convey a high degree of assurance, as demonstrated in Ludwig's examples.
Frequent in
News & Media
75%
Academia
15%
Science
5%
Less common in
Formal & Business
3%
Encyclopedias
1%
Reference
1%
Ludwig's WRAP-UP
In summary, "he was certain" is a commonly used phrase to express a subject's strong conviction or belief. As confirmed by Ludwig, its grammatical structure is correct, and the phrase is widely used across various contexts, particularly in news and media, and academic writings. While direct and clear, it is advisable to sometimes vary your language with alternatives to add nuance to your writing or speaking. Remember to tailor your choice based on the specific context and desired level of formality.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
he was sure
Replaces "certain" with its direct synonym "sure", offering a slightly less formal tone.
he was convinced
Emphasizes that his belief is based on persuasion or evidence, rather than simple certainty.
he had no doubt
Indicates a complete absence of uncertainty or skepticism.
he felt confident
Highlights the feeling of assurance and self-belief in his assessment.
he firmly believed
Stresses the strength and intensity of his belief.
he was positive
Similar to "sure" but can also imply a more forceful declaration of certainty.
he ascertained
Suggests that he confirmed something through investigation or discovery, implying certainty.
he had absolute faith
Highlights unwavering trust or belief in someone or something, leading to certainty.
he knew for a fact
Emphasizes that his certainty is based on concrete, undeniable evidence.
he was dead certain
Uses a more emphatic, colloquial expression to convey absolute certainty.
FAQs
How can I use "he was certain" in a sentence?
You can use "he was certain" to express someone's strong belief about something. For example: "He reviewed the data thoroughly and he was certain that the results were accurate."
What are some alternatives to "he was certain"?
You can use alternatives like "he was sure", "he was convinced", or "he had no doubt" depending on the context.
Is it better to say "he was certain" or "he was sure"?
Both "he was certain" and "he was sure" are correct and have similar meanings. "Certain" often implies a slightly higher degree of conviction than "sure" but they are largely interchangeable.
What's the difference between "he was certain" and "he thought"?
"He was certain" indicates a strong conviction or belief, whereas "he thought" suggests a more tentative or less firmly held opinion.
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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
92%
Authority and reliability
4.8/5
Expert rating
Real-world application tested