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
functionally
Grammar usage guide and real-world examplesUSAGE SUMMARY
The word "functionally" is correct and usable in written English.
You can use it to describe something which is working effectively or efficiently. For example, "The projector was functioning properly, and was working functionally."
✓ Grammatically correct
Science
News & Media
Alternative expressions(20)
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
So, according to functionalism, necessarily, two creatures who are functionally alike are also mentally alike.
Science
The processing is performed by a functional mechanism, that is, a mechanism whose components are functionally organized to perform the computation.
Science
Even the buildings are not immune; around the country 3,200 courthouses are "physically eroded" and "functionally deficient", says the National Centre for State Courts.This affects courts' functioning in many ways.
News & Media
Yellen says when the federal funds rate functionally hit zero, the Fed needed to turn to novel tools, including forward guidance.
News & Media
One legislator in New Jersey described her state as "functionally bankrupt".
News & Media
If these molecules really were functionally totally identical, Lipitor wouldn't outperform its counterparts in head-to-head tests, Celebrex would have followed Vioxx off the market, and your depressed cousin's psychiatrist wouldn't keep cycling her onto different meds.
News & Media
Matters are little better with white children, who make up a tenth of the Dallas Independent Schools District (DISD): they are three times more likely to be functionally illiterate at the age of ten than their peers in Houston's public schools.
News & Media
Lakewood, Ohio, condemned well-kept historic homes for being "functionally and economically obsolete".
News & Media
America's civil engineers routinely give its transport structures poor marks, rating roads, rails and bridges as deficient or functionally obsolete.
News & Media
But it does suggest the question should be addressed functionally, rather than in the abstract.
News & Media
It found that 22% of British adults are "functionally illiterate"—unable to perform simple tasks like looking up the entry for "plumbers" in the phone book.
News & Media
Expert writing Tips
Best practice
Use "functionally" to specify that something works or exists in effect, even if not perfectly or ideally. For instance, a "functionally obsolete" bridge may still be standing, but requires significant restrictions.
Common error
Avoid using "functionally" when you simply mean "functional". "Functional" describes something capable of performing a task, while "functionally" often implies a degree of effectiveness or equivalence under certain conditions. Consider: "The design is functional" versus "The design is functionally equivalent to a previous model."
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The adverb "functionally" primarily modifies verbs or adjectives to describe how something operates or its manner of functioning. It emphasizes the practical or effective aspect of an action or state, as shown in Ludwig's examples. Ludwig AI confirms its correct usage.
Frequent in
News & Media
54%
Science
44%
Formal & Business
1%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the adverb "functionally" correctly describes the manner or effectiveness of something's operation, often implying a practical or conditional equivalence. It appears frequently in News & Media and Science contexts, suggesting a neutral register. Ludwig AI confirms its appropriate usage and provides numerous examples. When writing, remember that "functionally" isn't just a synonym for "functional"; it adds nuance about the actual working state or effect.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
effectively
Directly addresses the success of an action or process.
in effect
Emphasizes the practical result or outcome rather than the method.
practically speaking
Focuses on the real-world application and implications.
in practice
Highlights how something works in reality versus theory.
operationally
Relates specifically to the way something operates or is managed.
for all practical purposes
Stresses the lack of significant difference in real-world terms.
virtually
Implies near equivalence or the same outcome.
as a matter of practicality
Highlights the pragmatic aspect and real-world considerations.
in terms of function
Emphasizes the functional aspect of something.
by way of function
Describes the method or purpose of something's operation.
FAQs
How can I use "functionally" in a sentence?
You can use "functionally" to describe how something operates or its effect. For example, "The two systems are "functionally identical"" or "The old equipment is now "functionally obsolete"".
What does "functionally obsolete" mean?
"Functionally obsolete" means something is still working but is outdated or inefficient. It might still perform its basic function, but it does so poorly compared to modern alternatives or has limitations that make it impractical. For example, "The bridge is "functionally obsolete" because it can't handle modern traffic loads".
Are "functional" and "functionally" interchangeable?
No, "functional" is an adjective describing something capable of performing a function, while "functionally" is an adverb describing how something functions or operates. You can describe something as "functional", meaning it works, but describe two systems as "functionally equivalent", meaning they work the same way.
What are some alternatives to using "functionally"?
Depending on the context, you can use alternatives such as "effectively", "in practice", "operationally", or "virtually". For instance, instead of saying "The two designs are functionally the same", you could say "The two designs are "effectively the same"".
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
4.5/5
Expert rating
Real-world application tested