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
be serious
Grammar usage guide and real-world examplesUSAGE SUMMARY
"be serious" is a correct and usable part of a sentence in written English.
It is a command or imperative phrase used to tell someone to be serious or to not take something lightly. You can use it in a variety of situations, such as when someone is joking around instead of taking a serious matter seriously, or when someone is not being genuine or sincere in their actions. Example: "John, this is a serious situation. Please be serious and focus on finding a solution instead of making jokes." Another example: "I don't think you understand the gravity of the situation. It's time to be serious and come up with a plan of action."
✓ Grammatically correct
News & Media
Wiki
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
Be serious.
News & Media
Aciman can't be serious.
News & Media
You Cannot Be Serious!
News & Media
He may be serious.
News & Media
So let's be serious.
News & Media
You can't be serious.
News & Media
Can he be serious?
News & Media
He couldn't be serious!
News & Media
But be serious.
News & Media
Be serious, but stay happy.
Wiki
Yet it can be serious.
News & Media
Expert writing Tips
Best practice
When using "be serious", ensure the context warrants a shift to a more earnest or thoughtful approach. Overusing it can sound condescending. Instead, vary your language with alternatives like "let's focus" or "consider this carefully."
Common error
Avoid using "be serious" in casual conversations with friends or family, as it can come across as overly formal or dismissive. Instead, opt for lighter phrases that convey your point without sounding harsh, such as "are you kidding?" or "seriously though?"
Source & Trust
82%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "be serious" primarily functions as an imperative, directly instructing or urging someone to adopt a more earnest, thoughtful, or focused demeanor. Ludwig examples show its use in situations demanding attentiveness or a break from levity. According to Ludwig AI, this phrase is a command, used to tell someone to not take something lightly.
Frequent in
News & Media
50%
Wiki
20%
Formal & Business
10%
Less common in
Science
10%
Encyclopedias
5%
Social Media
5%
Ludwig's WRAP-UP
In summary, the phrase "be serious" serves as a direct imperative urging a shift towards earnestness and attentiveness. Ludwig AI confirms it's a command meant to emphasize the weight of a situation. While grammatically correct and frequently used across diverse contexts such as News & Media, Wiki, and Formal & Business communications, its overuse or misuse in informal settings should be avoided. Consider related phrases such as "get real" or "pay attention" to vary your language and tone. Remember to tailor your expression to the specific situation to effectively communicate your message without sounding condescending or insensitive.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
get real
Emphasizes acknowledging the true state of affairs, often when someone is being naive or unrealistic.
stop kidding around
Directly addresses someone who is acting playfully when seriousness is required.
focus please
Requests attention and a shift towards concentrated thought or action.
pay attention
Instructs someone to listen carefully and consider something important.
settle down
Implies a need for calmness and seriousness, often in a chaotic situation.
let's be frank
Signals an intention to speak honestly and directly about a potentially difficult topic.
cut the nonsense
Orders an immediate cessation of foolish or trivial behavior.
get down to business
Urges a transition from casual talk or activity to purposeful work.
think carefully
Suggests deliberate consideration and thoughtful analysis.
behave yourself
Implies a need to act responsibly and appropriately.
FAQs
How can I use "be serious" in a sentence?
You can use "be serious" as an imperative phrase to urge someone to adopt a more earnest approach, such as, "This is no time for jokes; please "be serious"."
What are some alternatives to "be serious"?
Depending on the context, you can use phrases like "get real", "stop kidding around", or "pay attention" instead of "be serious".
Is it ever inappropriate to use "be serious"?
Yes, using "be serious" in informal settings or when offering comfort can be perceived as insensitive. Choose more empathetic language instead.
What's the difference between ""be serious"" and "seriously"?
"Be serious" is a direct command or request, while "seriously" can be used as an adverb to express sincerity, surprise, or doubt.
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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
82%
Authority and reliability
4.6/5
Expert rating
Real-world application tested