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
has built up
Grammar usage guide and real-world examplesUSAGE SUMMARY
"has built up" is a correct and usable phrase in written English.
You can use it when you want to express a gradual increase over time, such as in the following sentence: The company has built up a loyal customer base over the past five years.
✓ Grammatically correct
News & Media
Academia
Science
Wiki
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
"Too much pressure has built up".
News & Media
And Iran has built up cash reserves.
News & Media
Politically and culturally, Japan has built up a resilient democracy.
Academia
Mr. Buffett has built up enormous clout with investors.
News & Media
Gady has built up to his real provocation.
News & Media
He has built up a significant stake in the firm.
News & Media
But the economy has built up worrying imbalances.
News & Media
He has built up a highly lucrative minerals trafficking operation.
News & Media
Unum has built up its influence in Britain.
News & Media
So my thinking has built up from the plate".
News & Media
Akpabio has built up infrastructure and industrial development.
News & Media
Expert writing Tips
Best practice
Use "has built up" to describe a gradual increase or accumulation over time, whether it's referring to tangible assets, intangible qualities, or abstract concepts.
Common error
While "has built up" implies gradual accumulation, avoid using it for processes that occur rapidly or instantaneously. For instance, prefer "generated" over "has built up" when describing immediate consequences.
Source & Trust
88%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "has built up" functions as a present perfect verb phrase, indicating an action that started in the past and continues to have relevance or effect in the present. It describes a process of gradual accumulation or development. This is supported by Ludwig, which confirms its correct usage.
Frequent in
News & Media
63%
Academia
12%
Science
10%
Less common in
Wiki
8%
Formal & Business
7%
Ludwig's WRAP-UP
The phrase "has built up" is a versatile verb phrase used to describe a gradual accumulation or development over time. As Ludwig AI confirms, it is grammatically correct and widely accepted in written English. Occurring frequently in News & Media, Academia, and Science contexts, the phrase maintains a neutral register. Related phrases include "has accumulated", "has developed", and "has established", each offering subtle variations in meaning. To use the phrase effectively, remember that it is most appropriate for describing processes with a prolonged timeframe. As demonstrated by the numerous examples provided by Ludwig, "has built up" is a valuable addition to any writer's toolkit.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
has accumulated
Replaces "built up" with a focus on the collection of something over time.
has developed
Emphasizes the process of growth and maturation.
has established
Highlights the act of setting up or creating something solid.
has fostered
Focuses on nurturing and encouraging growth.
has cultivated
Implies careful development and refinement.
has amassed
Suggests gathering a large quantity of something.
has generated
Highlights the creation or production of something.
has strengthened
Emphasizes making something more robust or powerful.
has expanded
Focuses on increasing in size or scope.
has constructed
Implies a deliberate and methodical process of building.
FAQs
How can I use "has built up" in a sentence?
You can use "has built up" to describe the gradual accumulation of something over time, such as "The company "has built up" a strong reputation" or "Pressure "has built up" over the negotiations".
What are some alternatives to "has built up"?
Alternatives include "has accumulated", "has developed", or "has established", depending on the specific context and nuance you want to convey.
Is it correct to say "has build up" instead of "has built up"?
No, the correct form is "has built up". "Built" is the past participle of "build", which is required after the auxiliary verb "has". "Build" is the base form, and "build up" is an incorrect form in this context.
What is the difference between "has built up" and "has accumulated"?
While both phrases imply a gradual increase, "has built up" often suggests a more active or constructive process, whereas "has accumulated" simply implies a gathering or collection. For example, you might say someone "has built up" a business, but "has accumulated" wealth.
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