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
it was building
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "it was building" is correct and usable in written English.
You can use it to describe a gradual increase or development of something, such as tension, excitement, or a physical structure. Example: "As the storm approached, the anticipation in the crowd was palpable; it was building with every rumble of thunder."
✓ Grammatically correct
News & Media
Academia
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
58 human-written examples
Toyota's handling of safety problems contrasts with steps Toyota took 30 years ago, when it was building its American operations.
News & Media
Before Facebook suddenly acquired Instagram in 2012, it was building its own photo editing app called… Facebook Camera.
News & Media
"It was building up its naval power.
News & Media
To be fair, "Today" was much farther ahead in those days, so it was building on its lead.
News & Media
NBC had believed it was building an audience for its own game show, "Twenty One," on Wednesday nights.
News & Media
In recent days, North Korea claimed that it was building a new uranium-enrichment facility at its main atomic plant.
News & Media
By 1900 it was building skyscrapers.
News & Media
It was building toward a climax.
News & Media
It was building a base for my object.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
2 human-written examples
"It's building.
News & Media
It's building people, too".
News & Media
Expert writing Tips
Best practice
Use "it was building" to describe an ongoing process, whether physical (like a structure) or abstract (like a relationship or tension).
Common error
Avoid using "it was building" when a simple past tense ("it built") is more appropriate to describe a completed action. "It was building" emphasizes the process and duration.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "it was building" functions as a verb phrase in the past continuous tense. According to Ludwig AI, it describes an action that was in progress at a specific time in the past. The continuous aspect emphasizes the duration and ongoing nature of the "building" activity.
Frequent in
News & Media
55%
Academia
25%
Wiki
10%
Less common in
Formal & Business
5%
Science
3%
Reference
2%
Ludwig's WRAP-UP
In summary, "it was building" is a grammatically sound and frequently used phrase in English. According to Ludwig AI, it is suitable for describing an ongoing action in the past. It commonly appears in news, academic, and wiki sources, demonstrating its versatility. Related phrases like "it was constructing" or "it was developing" can offer nuanced alternatives. Remember to use it to emphasize the continuous nature of an action and avoid confusing it with the simple past tense. With a high expert rating and numerous examples, "it was building" is a reliable choice for expressing the idea of ongoing creation or development.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
it was constructing
Replaces "building" with a more formal synonym, "constructing".
it was developing
Emphasizes the gradual growth and evolution of something over time.
it was creating
Shifts the focus to the act of creation, emphasizing the origin of something new.
it was forming
Focuses on the initial stages of development and the taking shape of something.
it was establishing
Highlights the act of setting something up on a firm or permanent basis.
it was generating
Focuses on the production or bringing into existence of something.
it was assembling
Highlights the act of putting together different parts to create a whole.
it was erecting
Suggests raising or building something tall or substantial.
it was fabricating
Implies a more deliberate and possibly artificial process of creation.
it was pioneering
Suggests initiating or developing something entirely new.
FAQs
How can I use "it was building" in a sentence?
Use "it was building" to describe a continuous action of creating or developing something over a period of time. For example, "The company reported that "it was building" a new factory last year".
What are some alternatives to saying "it was building"?
You can use phrases like "it was constructing", "it was developing", or "it was creating" depending on the specific context.
Is it correct to say "it was building" or should I say "it built"?
Both are correct, but they convey different meanings. "It built" implies a completed action, while ""it was building"" indicates an ongoing process at a specific time in the past.
What's the difference between "it was building" and "it is building"?
"It is building" describes an action happening now, whereas ""it was building"" refers to an action that was in progress at some point in the past.
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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested