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 serious
Grammar usage guide and real-world examplesUSAGE SUMMARY
'was serious' is a grammatically correct and usable phrase in written English.
It is typically used as a form of the verb 'to be' to show that something was done in a serious manner. For example, "He was serious when he said he would clean the kitchen."
✓ Grammatically correct
News & Media
Alternative expressions(1)
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
54 human-written examples
It was serious business.
News & Media
G.M. was serious.
News & Media
Stan's face was serious.
News & Media
But he was serious.
News & Media
This was serious.
News & Media
The risk was serious.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
6 human-written examples
Be serious.
News & Media
Were you being serious?
News & Media
"Gloria," however, is serious.
News & Media
David: I'm serious.
News & Media
Then he is serious.
News & Media
Expert writing Tips
Best practice
Use "was serious" to clearly convey that a statement, action, or situation should not be taken lightly. It adds weight and importance to your message.
Common error
Avoid using "was serious" when a lighter or more nuanced expression would be more appropriate. Overusing it can make you seem overly formal or dramatic in informal settings.
Source & Trust
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "was serious" functions as a verb phrase indicating a state of being. It conveys that someone or something exhibited a quality of earnestness, importance, or gravity at a specific point in the past. This aligns with Ludwig's / Ludwig AI observations about its usage.
Frequent in
News & Media
80%
Academia
7%
Huffington Post
7%
Less common in
Forbes
2%
Wikipedia
2%
Science Magazine
2%
Ludwig's WRAP-UP
In summary, the phrase "was serious" is a versatile and commonly used expression that adds weight and importance to a statement or situation. As Ludwig / Ludwig AI confirms, it is grammatically correct and frequently found in diverse contexts, especially within news and media. While primarily neutral in register, its effective use requires careful consideration to ensure it aligns with the intended tone and message. Remember to avoid overuse in informal situations, and be mindful of subject-verb agreement to maintain accuracy.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
was deadly serious
Adds intensity, emphasizing the complete absence of levity.
meant business
Emphasizes determination and intent more strongly.
was not joking
Highlights the absence of humor, focusing on sincerity.
was earnest
Stresses sincerity and depth of feeling.
was not kidding
Similar to "was not joking" but slightly more informal.
was in earnest
A more formal way of saying "was earnest".
was significant
Focuses on the importance or consequence of something.
was critical
Implies the situation required immediate attention.
was no laughing matter
Highlights the gravity of the situation.
was a grave matter
Emphasizes the seriousness and potential danger of the situation.
FAQs
How can I use "was serious" in a sentence?
You can use "was serious" to indicate a lack of humor, importance, or sincerity in a statement or action. For example, "He "was serious" about the consequences of the decision."
What are some alternatives to "was serious"?
Depending on the context, you can use alternatives such as "meant business", "was earnest", or "was significant".
Is it correct to say "were serious" instead of "was serious"?
The correct form depends on the subject. Use "was serious" with singular subjects (e.g., "he", "she", "it") and "were serious" with plural subjects (e.g., "they", "we").
What's the difference between "was serious" and "seemed serious"?
"Was serious" indicates a confirmed state of seriousness, while "seemed serious" suggests an appearance of seriousness that may or may not be genuine.
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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
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested