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
observable
Grammar usage guide and real-world examplesUSAGE SUMMARY
The word "observable" is correct and usable in written English.
It can be used to refer to something that can be seen or noticed by someone. For example: The effects of global warming have become increasingly observable in recent years.
✓ Grammatically correct
News & Media
Science
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
He uses a 30-year timeframe which is open to objections (the longer the time frame, the fewer the observations; the last observable time period started in 1983.
News & Media
Unfortunately potential output is not observable, not even ex post".
News & Media
Because Indigenous suicide and self-harm attempts were reported differently and "rarely involve the expected pattern of observable mental health issues", they were difficult to predict and there was "often a very limited window of opportunity for intervention", the report said.
News & Media
To square that with the observable fact that the universe is expanding, and thus might be expected to get less and less dense as it grows older, the three researchers modestly proposed repealing the law of conservation of matter.
News & Media
As time marches on, all possible universes implicit in all quantum equations describing every single particle in the currently observable universe actually do come into existence and each then splits in a similar way, and so on.Compared with even the weirdness of the Copenhagen interpretation, this is a mind-blowing idea.
News & Media
Dr Marsh therefore wondered if the brains of extreme altruists might have observable differences from other brains and, in particular, whether such differences might be the obverse of those seen in psychopaths.In this section Saccharin solution?
News & Media
Rather, ATLAS and CMS, which are located on opposite sides of the LHC's loop, are designed to detect patterns of observable particles that theory suggests the Higgs should break down into.
News & Media
Protons and neutrons, which make up most observable matter, contain two types of quark, called "up" and "down".
News & Media
Industry insiders report that prudent institutions were running internal valuation models even when market prices were clearly observable: those that were not had to scramble to develop such models when markets seized up, causing delays in proper disclosure.
News & Media
Friedrich Schneider, of Linz University in Austria, reckons that, for the first time in a decade, transactions taking place outside the taxable and observable realm of the official economy captured by GDP numbers are increasing.
News & Media
The new is a direct examination of people's DNA, searching for genes whose variation correlates with observable behavioural differences.Twins studies, which seek to control for the effects of upbringing by comparing identical twins (who share all their DNA) with fraternal ones (who share, on average, half), have been going on since the 1950s.
News & Media
Expert writing Tips
Best practice
When using "observable" in scientific or technical writing, ensure you clearly define what instruments or methods are used to make the observation. This adds precision and reproducibility to your work.
Common error
Avoid using "observable" in contexts where 'apparent' or 'evident' would be more appropriate. "Observable" implies a direct or indirect method of observation, so it's less suitable for purely conceptual or abstract ideas.
Source & Trust
91%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "observable" is as an adjective, modifying nouns to indicate something that can be perceived or detected. Ludwig AI confirms its correct usage in describing properties or phenomena that are accessible to observation.
Frequent in
News & Media
40%
Science
35%
Formal & Business
15%
Less common in
Encyclopedias
5%
Reference
3%
Wiki
2%
Ludwig's WRAP-UP
The word "observable" functions primarily as an adjective, signifying something capable of being perceived or detected. As demonstrated by Ludwig, it sees frequent use across various domains, including news, science, and formal business contexts. Its formal register makes it particularly suitable for technical and analytical writing, while alternative terms like "perceptible" or "noticeable" may offer more nuanced applications. Ludwig AI confirms the grammatical correctness of "observable", suggesting that the few instances of unobservable, may be worth further investigation. Using "observable" correctly means choosing contexts where something can genuinely be observed directly or indirectly, contributing to clarity and precision in communication.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
perceptible
Emphasizes the capability of being perceived through the senses.
noticeable
Highlights the ease with which something can be noticed or observed.
detectable
Focuses on the ability to discover or identify something, often through specific methods.
visible
Stresses the capacity of being seen with the eyes.
apparent
Indicates something that is easily understood or seen.
evident
Suggests something that is clear and obvious.
ascertainable
Highlights the possibility of finding something out for certain.
measurable
Emphasizes the capacity of being quantified or measured.
demonstrable
Indicates something that can be shown or proven.
discernible
Focuses on the ability to distinguish or recognize something, often with effort.
FAQs
How can I use "observable" in a sentence?
You can use "observable" to describe something that can be seen or detected. For example: "The effects of the experiment were "clearly observable"".
What are some alternatives to "observable"?
Depending on the context, alternatives to "observable" include "perceptible", "noticeable", or "detectable depending" on the specific nuance you want to convey.
What is the difference between "observable" and "visible"?
"Observable" encompasses anything that can be detected through any of the senses or through scientific instruments, while "visible" strictly refers to what can be seen with the eyes.
Is it correct to say something is "unobservable"?
Yes, "unobservable" is a valid term used to describe something that cannot be detected or measured with current methods or technology. It's the direct antonym of "observable".
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
91%
Authority and reliability
4.6/5
Expert rating
Real-world application tested