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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
that sucks
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that sucks" is technically correct and can be used in written English in certain contexts.
For example, if a friend tells you they failed a test, you could respond with "Aww, that sucks." It is often used informally and should be avoided in formal contexts.
✓ Grammatically correct
News & Media
Wiki
Alternative expressions(4)
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
52 human-written examples
White Person 2: Oh shit, that sucks.
News & Media
And that sucks, doesn't it?
News & Media
"Well, that sucks," Dawn said.
News & Media
"Well, that sucks," Sarah said, staring at her iPhone.
News & Media
Q: wow. that sucks….
News & Media
It's gone so fast and that sucks.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
8 human-written examples
It represents companies that suck".
News & Media
You will have days that suck.
News & Media
Yes, there are creative jobs that suck.
News & Media
She says that … " "Sucks to your auntie," Jack snapped.
News & Media
I think that life sucks.
News & Media
Expert writing Tips
Best practice
Use "that sucks" in informal conversations to express empathy or disappointment. It's appropriate when reacting to someone's bad news or expressing frustration over a minor inconvenience.
Common error
Avoid using "that sucks" in professional emails, academic papers, or formal presentations. Opt for more polite and professional alternatives like "that's unfortunate" or "that's disappointing" to maintain a respectful tone.
Source & Trust
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "that sucks" is to serve as an interjection expressing a negative reaction or conveying empathy. As supported by Ludwig AI, it acknowledges an unpleasant situation with a tone of disappointment or disapproval.
Frequent in
News & Media
50%
Wiki
20%
Science
10%
Less common in
Formal & Business
5%
Reference
5%
Encyclopedias
5%
Ludwig's WRAP-UP
In summary, "that sucks" is a grammatically correct phrase used to express disappointment or empathy in informal settings. While its usage is common in casual conversations and media, it's best to avoid it in formal or professional contexts. Ludwig AI confirms the phrase's grammatical correctness and provides numerous examples from reliable sources. For more formal situations, consider alternatives like "that's unfortunate" or "that's disappointing". Remember to tailor your language to the specific context and audience to maintain an appropriate tone. While perfectly correct in everyday conversation, its simplicity may not resonate in more serious situations.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
What a bummer
An informal expression of disappointment, similar in tone to "that sucks".
That's a drag
Informal, similar to "that sucks" but slightly milder.
That's awful
Emphasizes the severity of the situation, expressing stronger negative feeling.
That's terrible
Similar to "that's awful", indicating a strong negative reaction.
That's rough
Expresses sympathy and acknowledges the difficulty of the situation.
That's disappointing
Focuses on the feeling of letdown or unmet expectations.
That's no good
A simple and direct way to express disapproval or that something is not acceptable.
That's a shame
Expresses regret or sorrow about the situation.
That's a pity
Expresses sorrow or regret, often used in response to bad news.
That's unfortunate
A more formal way to express that something is not ideal.
FAQs
What does "that sucks" mean?
The phrase "that sucks" is an informal expression used to show empathy or express disappointment about an unfortunate situation. It's a way of saying that something is bad or unpleasant.
When is it appropriate to use the phrase "that sucks"?
It's appropriate to use "that sucks" in casual conversations with friends, family, or close colleagues when acknowledging something negative or unfortunate. Avoid using it in formal or professional settings where a more polite expression is needed.
What are some alternatives to saying "that sucks"?
Depending on the context, you can use alternatives such as "that's unfortunate", "that's disappointing", "what a bummer", or "that's a shame" to convey a similar sentiment with varying degrees of formality.
Is "that sucks" grammatically correct?
Yes, "that sucks" is grammatically correct as a simple sentence. "That" is a pronoun, and "sucks" is a verb in the third-person singular present tense. While grammatically sound, its informal nature makes it unsuitable for formal writing.
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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
4.1/5
Expert rating
Real-world application tested