unspecified duration

USAGE SUMMARY

The phrase "unspecified duration" is correct and usable in written English.
It can be used when referring to a time period that has not been clearly defined or determined. Example: "The project will be on hold for an unspecified duration until we receive further instructions."

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

9 human-written examples

According to the story, he was dismissed after an incident in which a boy dropped his sleeping bag in the dark, Mr. Kops "pressed up against" him (for an unspecified duration of time), and then he offered to help pick up the bag.

The New York Times

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Vice

In early 1984, for an unspecified duration, he received Crescormon (Kabivitrum) because of an Asellacrin shortage.

Emerging Infectious Diseases

Time-weighted average MMA levels ranged from 0.16 to 4.38ppm (mean: 1.4 ppm) for an unspecified duration.

Critical Reviews in Toxicology

A tuberculosis suspect was defined as a person with a reported cough for 20 days or more, or with reported cough of unspecified duration.

BMC Infectious Diseases

ICD-9 procedure code 96.70 (ventilation support of unspecified duration) was reviewed to determine potential error introduced by failure to define ventilator duration.

Critical Care

Human-verified similar examples from authoritative sources

Similar Expressions

51 human-written examples

Susak et al published an RCT in which 108 colorectal cancer patients received either Ukrain as a monotherapy or 5-fluororacil for an unspecified time duration [ 126].

BMC Cancer

8 In clinical practice, postoperative adjuvant chemotherapy with FOLFOX/capecitabine/oxaliplatin (XELOX) or FOLFOX/XELOX plus bevacizumab is administered for an overall treatment of 6 months, despite lack of data favoring this approach and an unspecified chemotherapy duration (6 months).

Cancer Management and Research

On July 15th, the week after a cop shot Philando Castile, in Minnesota, and a man in Dallas killed five policemen, the prison was shut down again, for reasons unexplained and a duration unspecified.

The New Yorker

He was treated with different antihelmintic regimens, namely mebendazole 500 mg qid for 10 days, thiabendazole 500 mg bid for 5 days, albendazole 200 mg bid for 6 days and another course of albendazole with unspecified dosage and duration.

American Journal of Tropical Medicine and Hygiene

Under the deal, the Chinese company would pay Nicaragua $10m annually during the first decade, followed by a share of canal revenues that would begin at 1% and rise to an unspecified percentage over the duration of the concession.

The Guardian

Expert writing Tips

Best practice

When using "unspecified duration", ensure the context makes clear what event or activity the duration refers to. For example, instead of "the project will be delayed for an unspecified duration", use "the project will be delayed for an unspecified duration, pending resource allocation".

Common error

Avoid using "unspecified duration" when a more precise estimate is possible or necessary. Overusing it can make your writing seem vague and unprofessional. If even a rough estimate is available, provide it instead.

Linguistic Context

The phrase "unspecified duration" functions as a noun phrase where 'unspecified' modifies the noun 'duration'. Ludwig examples show it typically describes the length of time associated with an event, condition, or process, especially when the exact timeframe is unknown or has not been determined.

Expression frequency: Common

Frequent in

Science

50%

News & Media

37%

Formal & Business

0%

Less common in

Encyclopedias

0%

Wiki

0%

Social Media

0%

Ludwig's WRAP-UP

The phrase "unspecified duration" is a grammatically sound and commonly used expression to denote a period of time that is not precisely defined or known. As confirmed by Ludwig, its usage spans across various domains, particularly science and news media. Alternatives such as "undefined period" and "indeterminate time" offer similar meanings, but it’s crucial to ensure the context justifies the lack of specificity. Employ it judiciously to avoid vagueness and maintain clarity in your writing.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

undefined period

Replaces 'unspecified' with 'undefined', emphasizing the lack of definition.

indeterminate time

Uses 'indeterminate' to convey the uncertain nature of the duration.

unfixed timeframe

Substitutes 'duration' with 'timeframe', implying a lack of set boundaries.

unspecified time frame

Separates 'timeframe' into two words. This is a similar wording with minor differences.

unknown duration

Replaces 'unspecified' with 'unknown', highlighting the lack of knowledge about the time period.

unspecified length of time

Expands on 'duration' for clarity, particularly for a general audience.

unestablished period

Replaces 'unspecified' with 'unestablished', suggesting the duration hasn't been determined yet.

undefined timeframe

Combines 'undefined' and 'timeframe', creating a similar but slightly different wording.

open-ended duration

Uses 'open-ended' to suggest the duration has no predetermined conclusion.

unspecified amount of time

Similar to 'unspecified length of time', but uses 'amount' instead.

FAQs

What does "unspecified duration" mean?

The phrase "unspecified duration" means that the length of time something will last is not known, determined, or stated clearly. It implies an indefinite or unknown period.

How to use "unspecified duration" in a sentence?

You can use "unspecified duration" to indicate that a period of time is not precisely defined. For example: "The system maintenance will take an "unspecified duration"".

What can I say instead of "unspecified duration"?

You can use alternatives like "undefined period", "indeterminate time", or "unknown length of time" depending on the context.

When is it appropriate to use "unspecified duration"?

It's appropriate when the exact duration is genuinely unknown or when providing a specific duration is not critical to the context. Avoid using it if a reasonable estimate can be provided.