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 been infrequent
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "has been infrequent" is correct and usable in written English.
It can be used to describe something that has not occurred often over a certain period of time. Example: "The occurrence of such events has been infrequent in recent years."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Alternative expressions(5)
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
17 human-written examples
Centuries of mutual dislike and distrust have clouded Vietnamese-Khmer relations, and intermarriage has been infrequent.
Encyclopedias
It remains unclear whether that pledge has been fulfilled; his attendance in the Lords has been infrequent.
News & Media
It's a relief to say that so far this season, this kind of dullness has been infrequent.
News & Media
While the commission routinely consults member countries on preliminary tariffs, in the past that has tended to be more of a formality, and opposition has been infrequent.
News & Media
Low probability areas occur over dryer ecoregions, where yellow fever presence has been infrequent.
Science
But the rain has been infrequent, with little impact on play — until Saturday.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
43 human-written examples
But the rocket launches since then have been infrequent.
News & Media
But allegations of corruption at competitions have been infrequent.
News & Media
She lived in N.Y. and since her mother's death her visits had been infrequent.
News & Media
Since her visits to the United States have been infrequent, Americans know her better on records than in concert.
News & Media
"You have to be ready to take a hit if it's not what you think it is," she said, adding that for her, disappointments had been infrequent.
News & Media
Expert writing Tips
Best practice
Use "has been infrequent" to describe trends, events, or actions that occur less often than expected or previously observed. Ensure your sentence clearly specifies the period or context in which the infrequency is noted.
Common error
Avoid using "has been infrequent" without defining the timeframe or subject. For instance, instead of saying "reports have been infrequent", specify "reports of side effects have been infrequent this quarter" for clarity.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "has been infrequent" functions as a descriptor, indicating that an event, occurrence, or action has occurred less often than expected or previously observed. Ludwig AI confirms its usability in written English.
Frequent in
News & Media
40%
Science
40%
Encyclopedias
7%
Less common in
Formal & Business
3%
Academia
3%
Reference
7%
Ludwig's WRAP-UP
In summary, "has been infrequent" is a grammatically sound phrase used to express that something occurs less often than expected or previously observed. Ludwig AI states that the phrase is correct and usable in written English. The phrase is versatile and appears in various contexts, including news, science, and encyclopedias, though it's most prevalent in news and scientific reporting. While direct synonyms like ""has been rare"" or ""has been uncommon"" exist, "has been infrequent" offers a slightly different nuance, focusing on the decreased frequency of an event. When using this phrase, ensure that the context and timeframe are clearly defined to avoid ambiguity.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
has not been frequent
A direct negation of frequency.
has been rare
Emphasizes the scarcity of occurrence.
has been uncommon
Highlights that the occurrence is not typical or usual.
has happened rarely
Focuses on the action of 'happening' in a rare manner.
has been sporadic
Suggests irregular and occasional occurrences.
has been scarce
Implies a limited availability or occurrence.
has been a rarity
Transforms the idea into a state of being a 'rarity'.
has been intermittent
Indicates pauses and breaks in occurrence.
has been occasional
Describes instances happening from time to time.
has been few and far between
An idiomatic expression indicating infrequency and wide spacing.
FAQs
How can I use "has been infrequent" in a sentence?
You can use "has been infrequent" to describe something that doesn't happen often. For example, "Rainfall "has been infrequent" this summer".
What are some alternatives to saying "has been infrequent"?
Alternatives include "has been rare", "has been uncommon", or "has not been frequent", depending on the nuance you want to convey.
Is it grammatically correct to say "has been infrequent"?
Yes, "has been infrequent" is grammatically correct. It follows the standard present perfect construction of "has/have + been + adjective".
What's the difference between "has been infrequent" and "is infrequent"?
"Has been infrequent" implies that something used to happen more often but doesn't now, while "is infrequent" simply states that something doesn't happen often in the present.
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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested