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
duality
Grammar usage guide and real-world examplesUSAGE SUMMARY
The word "duality" is correct and usable in written English.
It is a noun referring to a situation in which two opposite things exist at the same time. For example, you can use the sentence: "The duality of good and evil is a timeless theme in literature".
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(5)
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
Miller, like all the others, can easily separate this work from the original, keeping a clear linked duality: they seem in love with Linehan's script, but can't help making reference to the film, which they also loved.
News & Media
In fact, Rutland is a jerk throughout, but that duality does seem to have echoed Hitch's.
News & Media
With insight and seemingly effortless fluidity, Mr Galgut has written a beautiful, and at times funny, novel that movingly captures the duality of one of Britain's most thoughtful authors.
News & Media
That was the initial idea, but since then other mathematicians took this up and found similar and surprising patterns in geometry and quantum physics, in particular the electromagnetic duality.
News & Media
Alexander Shumilin of the Institute of USA and Canada, a think-tank, says Russia's duality reveals a lack of a clear strategy, an aversion to complexities and a preference for ad-hoc decisions.Mr Putin's feelings for Israel were enhanced by his passionate interest in the Holy Land.
News & Media
For centuries the two were carved together, signifying the duality of human existence.The jihadists of Islamic State (IS) understand the meaning of symbols better than most.
News & Media
As Willi Jasper, in a fine new book ("Faust und die Deutschen"; Rowohlt), points out, Faust's duality became a symbol of the national propensity to aim for the stars and plunge into the depths.
News & Media
The duality of names reflects an ideological rift regarding whether CFS's causes are physiological or psychological.
News & Media
Reinforcing one and reviving the other require painful reforms.An example of this duality is the fiscal grip of the central government compared with that of the 17 regions.
News & Media
He bemoans the advantage that cheaper fuel gives foreigners, but, with the usual duality of British attitudes to the continent, longs for the civilised rest stops in Belgium.
News & Media
Jean Tirole, a Nobel prize-winning economist at the Toulouse School of Economics, says that "at some point, you have to confront the duality of the labour market and the excessive role of judges in severance procedures".But this may be the best that can be hoped for, given the political constraints.
News & Media
Expert writing Tips
Best practice
When discussing complex or abstract concepts, use "duality" to highlight the presence of seemingly contradictory yet interconnected elements, enriching your analysis.
Common error
Avoid using "duality" simply to indicate two separate entities. Ensure that the entities you're describing exhibit a relationship of opposition, complementarity, or inherent tension for the term to be appropriate.
Source & Trust
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The word "duality" functions primarily as a noun, referring to a state or quality of being dual or having two parts, often contrasting or complementary. Ludwig AI confirms its proper usage in diverse contexts, as illustrated by the examples provided.
Frequent in
News & Media
38%
Science
35%
Encyclopedias
8%
Less common in
Formal & Business
5%
Reference
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "duality" is a noun used to describe the existence of two contrasting or complementary aspects. It is grammatically correct and very common in diverse contexts, especially in News & Media and Science. Ludwig AI confirms its proper usage. When using "duality", ensure you're highlighting the presence of two interconnected elements exhibiting some form of tension or balance, and you'll be on the right track.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
dual nature
Emphasizes the two-sided aspect of something's character or inherent qualities.
binary opposition
Highlights the contrasting nature of two concepts or entities, often used in philosophical or analytical contexts.
twofold aspect
Focuses on the existence of something with two distinct parts or characteristics.
paired contrast
Underscores the presence of two elements that are strikingly different from each other.
yin and yang
Introduces a philosophical concept referring to two complementary and opposing forces.
double standard
Suggests a situation where two different principles of behavior are applied unfairly to similar situations.
two sides of the same coin
Implies that two seemingly different things are actually interconnected and inseparable.
complementary opposites
Highlights the way that two opposing forces can, in fact, enhance one another.
antithesis
Focuses on direct opposition or contrast between two things.
ambivalence
Refers to the state of having mixed feelings or contradictory ideas about something or someone.
FAQs
How can I use "duality" in a sentence?
You can use "duality" to describe situations where two contrasting aspects exist, such as "The "duality of human nature"" or "The work explores the "duality of good and evil"".
What is an example of "duality" in physics?
In physics, a prime example is "wave-particle duality", which demonstrates that light and matter exhibit properties of both waves and particles, depending on the experiment.
Which is the right way to use duality - "the duality between" or "the duality of"?
Both "the duality between" and "the duality of" are acceptable. "The duality between" emphasizes the relationship, while "the duality of" focuses on the inherent nature. For example: "the duality between mind and body" or "the duality of the British attitudes".
What's the difference between "duality" and "duplicity"?
"Duality" refers to two contrasting aspects existing together, while "duplicity" refers to deception or insincerity. While both involve two elements, their meanings are vastly different.
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
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested