the reason was unknown

USAGE SUMMARY

The phrase "the reason was unknown" is correct and usable in written English.
It can be used when discussing a situation or event where the cause or explanation is not clear or has not been determined. Example: "The investigation concluded, but the reason was unknown, leaving many questions unanswered."

✓ Grammatically correct

Science

Human-verified examples from authoritative sources

Exact Expressions

9 human-written examples

Regarding the known reasons for not attending clinic, (in 39% of the cases the reason was unknown) the most frequent one was that the patient was very well and did not feel beneficial to attend (12 patients).

Intensive Care Medicine Experimental

Furthermore, one patient did not receive the intervention due to logistical problems and for one person the reason was unknown.

BMC Health Services Research

In the remaining three cases, extensive local disease was the reason not to perform surgery in 2 cases and in 1 case the reason was unknown.

Annals of Surgical Oncology

Reasons for not undergoing colonoscopy were refusal by the individual (43.1%) or undergoing another FOBT instead of colonoscopy (25.5%); the reason was unknown for 31.4%.

British Journal of Cancer

The logistic regression analysis also determined higher BMI as an independent beneficial factor for visual improvement after IVR, although the reason was unknown.

BMC Ophthalmology

Reasons for not starting dialysis among 181 (21.5%) participants were financial constraints (53.8%), fear of dialysis (14%), or the combination of both (8.1%), while the reason was unknown in 24.2%.

BMC Nephrology

Human-verified similar examples from authoritative sources

Similar Expressions

51 human-written examples

The reason is unknown, but she thought she might have touched guano-soiled rocks and then covered her nose and mouth with her hands because the cave smelled so bad.

The New York Times - Health

At the same strength level, the Ti 8V 1.5Mo 2Fe 3Al alloy has higher toughness and higher ductility than the Ti-1023 alloy, the reason is unknown and should be studied further.

Materials Science and Engineering: A

According to research published online this month in the Journal of Wildlife Diseases, some polar bears are losing their fur and the reason is unknown.

Science Magazine

The reason is unknown, but a recently arrived parasite from South America may have wiped out the imported fire ants, he says.

Science Magazine

The reason is unknown, although scholars think it is probably because they no longer had sexual intercourse.

Wikipedia

Expert writing Tips

Best practice

When using "the reason was unknown", ensure the context clearly indicates what the unknown reason pertains to. This prevents ambiguity and ensures the reader understands what information is missing.

Common error

Avoid using "the reason was unknown" repeatedly in close proximity without providing additional context. Vary your language by using synonyms or providing further details about related factors, even if the primary reason remains unclear.

Linguistic Context

The phrase "the reason was unknown" functions as a statement indicating a lack of knowledge or understanding regarding a specific cause, explanation, or motive. Ludwig confirms its grammatical correctness and usability.

Expression frequency: Uncommon

Frequent in

Science

62%

News & Media

22%

Wiki

10%

Less common in

Encyclopedias

3%

Formal & Business

3%

Ludwig's WRAP-UP

In summary, "the reason was unknown" is a grammatically correct and usable phrase that conveys a lack of information or understanding about a specific cause or motive. Ludwig's analysis reveals its presence across various domains, particularly in scientific and news contexts. While generally neutral in tone, its usage should be contextually clear. Consider using synonyms like "the cause was undetermined" or "the motive was obscure" for variety. Overall, it’s a reliable phrase for indicating uncertainty when the cause or explanation is yet to be determined.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

the rationale remained unclear

Emphasizes the lack of a clear explanation or justification.

the motive was obscure

Focuses on the lack of a discernible motivation behind an action.

the cause was undetermined

Highlights that the specific cause of an event has not been established.

the explanation was missing

Indicates that no explanation is available or apparent.

the basis was uncertain

Stresses the absence of a firm foundation or reason.

the origin was unidentified

Points out that the source or beginning of something is not known.

the grounds were unspecified

Highlights that the reasons or justifications have not been explicitly stated.

the logic was indiscernible

Focuses on the lack of clear reasoning or rationale.

the rationale was unrevealed

Emphasizes that the reason behind an action has not been disclosed.

the account was unexplained

Indicates that the explanation is unavailable.

FAQs

What does "the reason was unknown" mean?

The phrase "the reason was unknown" means that the cause, explanation, or motive for something is not known or has not been identified.

What can I say instead of "the reason was unknown"?

You can use alternatives like "the cause was undetermined", "the motive was obscure", or "the explanation was missing" depending on the specific context.

How formal is the phrase "the reason was unknown"?

The phrase "the reason was unknown" is suitable for both formal and informal contexts. It is a neutral statement indicating a lack of knowledge.

Is it grammatically correct to say "the reason was unknown"?

Yes, it is grammatically correct. The phrase follows standard English grammar rules with a subject ("the reason"), a verb ("was"), and a predicate adjective ("unknown").