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
while uncommon
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "while uncommon" is correct and usable in written English.
It can be used to introduce a contrast or to indicate that something is rare or not frequently encountered. Example: "While uncommon, some species of fish can survive in extreme temperatures."
✓ Grammatically correct
News & Media
Science
Wiki
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
33 human-written examples
1)"You can't get pregnant if you have sex during your period" While uncommon, this can happen.
News & Media
While uncommon, the city has hired outside criminal lawyers before; for example, after the 2003 Staten Island Ferry crash, which left 11 people dead and scores injured.
News & Media
While uncommon (5.6 % incidence), mortality rates from RAA rupture may be as high as 80%[14]4].
Science
While uncommon, the situation of a pregnant woman requiring ventilatory support for respiratory failure is very concerning.
Large asteroid impacts, while uncommon, can be a large threat to national security and to the human race.
News & Media
Diversion due to crowding, while uncommon, is a decision based on real-time data made together by hospital administration, ED directors, and local ambulance authorities.
Human-verified similar examples from authoritative sources
Similar Expressions
27 human-written examples
He added, "Bungie lost some key employees over the years, which while not uncommon for studios, may be an indication of that".
News & Media
The practice of nonsprinters using the 500 meters as a tuneup race, while not uncommon, is controversial, especially in the Olympics.
News & Media
And those searches, while not uncommon throughout the summer and early fall, rose substantially in the final days of the campaign, after many of the final polls were conducted.
News & Media
They said that concussions could not be deemed fully healed for at least two or three days and that Tomlin's immediate, public optimism — while not uncommon — misrepresented the seriousness of brain injuries.
News & Media
While not uncommon for prescriptions to include repeated burning at short fire return intervals, long-term frequent fire effects in hardwood forests have rarely been quantified.
Expert writing Tips
Best practice
When using "while uncommon", ensure the main clause introduces a contrasting or surprising element. For example, "While uncommon, certain medical conditions can present with seemingly unrelated symptoms."
Common error
Avoid using "while uncommon" when there is no actual contrast between the two clauses. For instance, don't say "While uncommon, the sky is blue" because the sky being blue is not usually surprising or contrary to its infrequency.
Source & Trust
78%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "while uncommon" functions as an adverbial clause of concession. It introduces a statement that contrasts with the main clause, acknowledging that something is rare or infrequent, as demonstrated in the Ludwig examples.
Frequent in
Science
50%
News & Media
26%
Wiki
23%
Less common in
Formal & Business
0%
Academia
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "while uncommon" is a grammatically correct and frequently used conjunction phrase that introduces a contrast by acknowledging the rarity of a situation. Ludwig AI confirms its validity. Predominantly found in science, news, and wiki contexts, it maintains a neutral register suitable for diverse writing styles. When using "while uncommon", be sure to highlight the contrast in the sentence.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
while infrequent
Direct synonym replacement for 'uncommon'.
although rare
Replaces "while" with "although", maintaining the contrastive meaning but emphasizing the rarity.
though not typical
Emphasizes the lack of typicality.
though infrequent
Substitutes both "while" and "uncommon" with synonyms, focusing on the lack of frequency.
even if unusual
Emphasizes the unexpected nature of the situation despite its rarity.
albeit atypical
A more formal alternative, highlighting the deviation from the norm.
although exceptional
Draws focus on the subject being an exception.
despite its rarity
Shifts the focus to the condition of being rare, explicitly stating it.
notwithstanding its infrequency
A formal option that underscores the infrequent nature of the subject.
in spite of being scarce
Highlights the limited availability or presence of something.
FAQs
How can I use "while uncommon" in a sentence?
Use "while uncommon" to introduce a fact or situation that is not frequently observed or encountered, often followed by a contrasting or surprising statement. For example: "While uncommon, "rainbows at night" can occur under specific atmospheric conditions".
What are some alternatives to "while uncommon"?
Alternatives include "although rare", "though infrequent", "even if unusual", or "albeit atypical". The best choice depends on the specific context and desired level of formality.
Is it always necessary to include a contrasting element when using "while uncommon"?
Yes, the primary function of "while uncommon" is to set up a contrast. The statement following it should present something unexpected or different in light of its rarity. Without a contrast, other phrases like "rarely" or "infrequently" might be more appropriate.
Can "while uncommon" be used in formal writing?
Yes, "while uncommon" is suitable for both formal and informal writing. However, in very formal contexts, consider alternatives like "albeit atypical" or "notwithstanding its infrequency" for a more sophisticated tone.
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
78%
Authority and reliability
4.3/5
Expert rating
Real-world application tested