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
they observe something
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "they observe something" is correct and usable in written English.
It can be used when describing the act of noticing or watching something carefully, often in a scientific or analytical context. Example: "During the experiment, they observe something unusual in the behavior of the subjects."
✓ Grammatically correct
Alternative expressions(2)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified similar examples from authoritative sources
Similar Expressions
60 human-written examples
Then they observed something more.
News & Media
"They noticed that the bag was open, and they observed something that looked like a body," said Keith W. Mellis, a Sanitation Department spokesman.
News & Media
However, when the scientists glued the beetles to the end of a wire, submerged them and monitored the oxygen content of the surrounding water, they observed something curious.
News & Media
"I'm not writing about [the Zhuangzi], but about the way people used that book when they observed something coming from the outside," Saussy told UChicago News.
Academia
As Robert Montgomerie of Queens University in Kingston, Ontario, and colleagues pondered such questions in the Canadian Arctic in 1981, they observed something remarkable.
Science & Research
As settlers assimilate and become familiar with the new environment, they may observe something interesting.
News & Media
"I'm always trying to get them to observe something they might have walked past on another occasion," said Ms. Gaus, who writes all the directions in rhyme.
News & Media
It means that by observing the data in nature, by going out and filming these animals behaving for hours and hours, or changing their setting in a lab and seeing how they interact, or changing their setting in the field and seeing how they interact, we can actually observe something, namely the proportion of fights.
Academia
With the resulting product, the newest generation will observe something extraordinary -- they actually do have "Grandma's smile" and "Uncle Willie's" eyes!
News & Media
They agree to date, but then Amanda and the models observe something disturbing about Jim from their window.
News & Media
When someone is talking to you, look or observe something else to show that you're not really into what they're saying.
Wiki
Expert writing Tips
Best practice
Use "they observe something" when you want to emphasize a careful or scientific observation made by a group of people. This suggests a deliberate and thoughtful process of noticing details.
Common error
Avoid using "they observe something" in very casual conversations. In everyday speech, alternatives like "they notice something" or "they see something" often sound more natural.
Source & Trust
60%
Authority and reliability
3.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "they observe something" typically functions as a clause element, specifically an independent clause consisting of a subject ("they"), a verb ("observe"), and an object ("something"). The verb "observe" indicates an action of noticing or perceiving.
Frequent in
Science
0%
News & Media
0%
Formal & Business
0%
Less common in
Science
0%
News & Media
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, "they observe something" is a grammatically sound phrase used to describe the act of a group noticing something. Ludwig AI analysis indicates that this phrase, while grammatically correct, lacks sufficient examples to determine its frequency and contextual usage accurately. While versatile, "they notice something" or "they perceive something" might be better fits for different tones. Use it to enhance clarity and impact in your writing, mindful of its formal implications and the need for contextual appropriateness.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
they notice something
Focuses on a more general act of noticing, without necessarily implying careful observation.
they perceive something
Highlights the sensory or cognitive awareness of something.
they detect something
Implies the discovery of something that is not immediately obvious.
they discern something
Suggests a careful and insightful observation leading to understanding.
they witness something
Emphasizes the act of being present and seeing something happen.
they spot something
Indicates a quick and often unexpected observation.
they identify something
Focuses on recognizing and naming something specific.
they note something
Highlights the act of making a record or taking notice of something.
they find something
Emphasizes the act of discovering something, often after a search.
they learn something
Focuses on gaining knowledge or understanding as a result of observation.
FAQs
What does "they observe something" mean?
It means that a group of people has noticed or carefully watched something and gained some understanding or insight from it.
What can I say instead of "they observe something"?
You can use alternatives like "they notice something", "they perceive something", or "they detect something" depending on the specific context.
Is "they observe something" formal or informal?
The phrase is generally considered neutral to slightly formal. It's suitable for scientific writing, news reports, and professional communication.
How do I use "they observe something" in a sentence?
For instance, you could say, "During the experiment, "they observe something" unusual in the subjects' behavior".
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
60%
Authority and reliability
3.5/5
Expert rating
Real-world application tested