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
that was rapidly
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that was rapidly" is correct and usable in written English.
It can be used to describe an action or event that occurred quickly in the past. Example: "The project that was rapidly completed exceeded all expectations and impressed the stakeholders."
✓ Grammatically correct
News & Media
Science
Encyclopedias
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
59 human-written examples
Google.cn was introduced into a political environment that was rapidly souring for American high-tech firms in China.
News & Media
"If the school had a male component that was rapidly dropping, there would be cause for concern," he said.
News & Media
They also saw a neighborhood that was rapidly losing the accent and influence that had defined it.
News & Media
"Tonight, the little giant rose to amazing heights," said one message that was rapidly circulated after the 10,000m.
News & Media
Maybe he was enticed by the growing audience in a neighborhood that was rapidly attracting new residents.
News & Media
The concoction applied was an "unstable combination", says Larry Keith, the new director of conservation, "[one] that was rapidly yellowing".
News & Media
He was on tour with a new campaign that was rapidly gaining traction on college campuses across the United States.
News & Media
Stepping over bodies in the packed and now darkened bar, they desperately searched for a way out of a building that was rapidly catching fire.
News & Media
But as he became known as the leading authority in facial feminization — a field that was rapidly being populated by other surgeons — his surgical interventions became more extensive.
News & Media
Until then, the Asylum concentrated mainly on straight-to-DVD low-budget horror movies — a market that was rapidly being taken over by bigger, savvier companies like Lionsgate.
News & Media
A quiet church-going person, she maintained that "you don't need to strip to be sexy" - a truth that was rapidly going out of circulation.
News & Media
Expert writing Tips
Best practice
Use "that was rapidly" to effectively describe processes, changes, or developments that occurred with notable speed. This phrase adds a sense of urgency or dynamism to your writing.
Common error
Avoid using "that was rapidly" to describe static conditions or situations where the speed of change is not relevant. This can create a misleading or unnatural tone. For example, don't say "the house that was rapidly old" unless it visibly aged quickly.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that was rapidly" functions as a relative clause, modifying a noun or noun phrase by providing additional information about its state of change or development. As Ludwig AI suggests, this indicates an action or event happening quickly in the past.
Frequent in
News & Media
50%
Science
29%
Encyclopedias
7%
Less common in
Wiki
7%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "that was rapidly" is a versatile relative clause used to emphasize the quick pace of a change or development. As Ludwig AI states, it is grammatically correct and widely used, especially in news, science, and encyclopedia articles. While generally neutral, its usage should be carefully considered to avoid misuse in static descriptions. Alternatives like "that quickly became" or "that swiftly turned into" can offer subtle variations in meaning. The phrase exhibits high source quality and consistent usage, solidifying its reliability in diverse writing contexts.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that quickly became
Replaces "rapidly" with "quickly", focusing on the speed of becoming something.
that swiftly turned into
Substitutes "rapidly" with "swiftly", emphasizing a fast transformation.
that accelerated into
Uses "accelerated" instead of "rapidly", highlighting increasing speed.
that soon developed into
Replaces "rapidly" with "soon", indicating a quick development over a short period.
that immediately transformed into
Emphasizes the immediacy of the transformation using "immediately" instead of "rapidly".
that escalated without delay
Highlights the lack of delay in the escalation process, replacing "rapidly" with "without delay".
that progressed at an accelerated pace
Expresses the idea of rapid progression by specifying "an accelerated pace".
that underwent a swift change
Focuses on the swiftness of the change, replacing "rapidly" with "swift".
that evolved in short order
Uses the idiom "in short order" to convey the speed of evolution.
that morphed with increasing velocity
Replaces "rapidly" with "increasing velocity", emphasizing the growing speed of the change.
FAQs
How can I rephrase "that was rapidly" to sound more formal?
For a more formal tone, consider alternatives such as "that swiftly became", "that quickly developed into", or "that progressed at an accelerated pace". These options replace the simpler "rapidly" with more sophisticated vocabulary.
What's the difference between "that was rapidly" and "that was quickly"?
While both phrases indicate speed, "that was rapidly" ("that was rapidly") often suggests a faster or more noticeable rate of change than "that was quickly". The best choice depends on the specific nuance you want to convey.
Is it ever incorrect to use "that was rapidly"?
It's not grammatically incorrect, but it can be misused. Avoid using "that was rapidly" when describing something unchanging or static. It's best suited for situations involving dynamic change or movement.
What are some common words that follow "that was rapidly"?
Common words following "that was rapidly" include verbs like "changing", "growing", "developing", "spreading", and "deteriorating", as these words describe actions or processes that can occur at different speeds.
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