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
complement
Grammar usage guide and real-world examplesUSAGE SUMMARY
"complement" is a correct and usable word in written English.
It is used to describe something that enhances or adds to something else, often by supplying what is lacking. For example: The desserts on the menu complement the main dishes perfectly.
✓ Grammatically correct
News & Media
Formal & Business
Science
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
It said Multimap would complement Virtual Earth, Live Search, Windows Live services, MSN and its new $6.5bn £3.2bnn) acquisition aQuantive, the online marketing group.
News & Media
Chester-le-Street showed that there's a psychological fragility about the side to complement the more obvious technical flaws that blighted the first two defeats in this series.
News & Media
However, we should be looking at how HCAs complement nursing staff and add them to the mix.
News & Media
As Sebes recalled, "He seemed to complement that partnership between Puskas and Kocsis perfectly, and beautiful passes began to flow between the three of them.
News & Media
Traditionalists argue that just as rent is due to the landlord, "due to" should only be used when it is the complement of the verb "to be"; otherwise, use "owing to" or "because of": The train's late arrival was due to [caused by] leaves on the line; the train was late owing to [because of] leaves on the line.
News & Media
The disclosure bill, a complement to one pushed in the Senate last week, is the latest in a series of legislative attempts to rein in the NSA's collection and analysis of Americans' phone records and, potentially, Internet usage.
News & Media
While the city authorities are keen to keep Vancouver's back from against the wall, they also want to make sure that its anti-flooding adaptation projects suit Vancouver's geography and complement the social make up of the city.
News & Media
Neville said that Özil will prove a good signing if Arsenal add some reinforcements up front to complement him.
News & Media
We're here to complement Westfield, and the shopping centre in Canary Wharf.
News & Media
"We don't replace paid staff, but we do work alongside them and complement their work.
News & Media
The chateau at Saint-Maurice de Reméns, central to his idyllic recollections of childhood, will become the seat of an international foundation to complement another institute in Paris and a rash of renamed avenues, schools and public buildings.
News & Media
Expert writing Tips
Best practice
When using "complement" to describe how two things work together, ensure that each item contributes something distinct to the partnership. For instance, "The wine perfectly complements the cheese" suggests that the wine and cheese each bring unique flavors that enhance the other.
Common error
Avoid mistaking "complement" (to enhance or complete) with "compliment" (to praise). Remember, "complement" completes, while "compliment" commends.
Source & Trust
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The word "complement" functions as both a verb and a noun. As a verb, it indicates the act of enhancing or completing something. As a noun, it refers to something that completes or enhances something else. Ludwig AI confirms its correct usage.
Frequent in
News & Media
36%
Formal & Business
28%
Science
18%
Less common in
Encyclopedias
3%
Wiki
3%
Reference
3%
Ludwig's WRAP-UP
In summary, "complement" is a versatile word that means to enhance or complete. As Ludwig AI confirms, it is grammatically correct and widely used. As a verb, it describes the action of enhancing; as a noun, it refers to the element that enhances. Remember to distinguish "complement" from "compliment" to avoid confusion. Use "complement" when you want to describe how two things work together harmoniously to improve each other, as demonstrated in the many examples provided by Ludwig.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
supplement
Changes the action from enhancing to adding something extra.
enhance
Focuses on improving the quality of something, rather than completing it.
augment
Implies increasing or enlarging something, often quantitatively.
complete
Emphasizes making something whole or finished, lacking the nuance of enhancement.
enrich
Highlights adding value or quality, often in a non-material sense.
round out
Suggests providing balance or completeness to a set or group.
flesh out
Indicates adding detail or substance to something that is underdeveloped.
go well with
Focuses on compatibility and harmonious pairing, especially in culinary contexts.
harmonize with
Emphasizes agreement or compatibility, often in a musical or aesthetic sense.
integrate with
Suggests combining elements into a unified whole.
FAQs
How can "complement" be used in a sentence?
The word "complement" can be used as both a verb and a noun. As a verb, it means to enhance or complete something, such as "The red dress "complements" her fair skin." As a noun, it refers to something that completes or enhances something else, for example, "A good sauce is a perfect "complement" to grilled fish".
What are some alternatives to using the word "complement"?
Depending on the context, you can use alternatives like "supplement", "enhance", or "augment" instead of "complement". For example, "This course "supplements" your existing knowledge," or "The new lighting will "enhance" the room's ambiance".
What is the difference between "complement" and "supplement"?
"Complement" means to enhance or complete, suggesting a harmonious pairing that improves the whole. "Supplement", on the other hand, means to add something extra or additional, often to make up for a deficiency. For example, vitamins "supplement" your diet, while a good wine "complements" a meal.
Is it correct to say something "complements to" something else?
No, the correct usage is "complements" without the "to". For example, you would say, "The scarf "complements" her outfit", not "complements to".
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
4.5/5
Expert rating
Real-world application tested