prior days

USAGE SUMMARY

The phrase "prior days" is correct and usable in written English.
It is used to refer to something that happened in the past. For example, "In my prior days I used to go fishing regularly with my grandpa."

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

15 human-written examples

Furthermore, prior studies have investigated relatively short lags, ranging from same day to the 5 prior days, with one repeated-measures study examining 12-day exposure (Jansen et al. 2005).

Environmental Health Perspectives

Concentrations of PM2.5 (average from 0900 hours to 0900 hours next day) were measured on each clinic day and for the 4 prior days with a 3000K Versatile Air Pollution Sampler (URG Corp., Chapel Hill, NC, USA) (Williams et al. 2000) located on the EPHD rooftop approximately 30 m above ground level.

Environmental Health Perspectives

We analyzed the effect from the same day up to 6 prior days; we also computed the moving averages as averages of the exposure lags.

Environmental Health Perspectives

We computed the mean of the outdoor temperatures for the 24 hr preceding each clinic evaluation and for prior days (from 1000 hours the day before the clinical evaluation to 0900 hours the day of the evaluation).

Environmental Health Perspectives

Agricultural use within a 3-mile radius on the monitoring day and use on the 2 4 prior days were significantly associated with air concentrations (p < 0.01) for all analytes except malathion; chlorpyrifos oxon showed the strongest association (p < 0.0001).

Environmental Health Perspectives

Last month, The Washington Post said that Mayor Anthony Williams had spent 17 of the 20 prior days outside the District of Columbia, making visits to Alaska, St . Louis Brussels and Paris, an itinerary that incited criticism from more than one City Council member.

The New York Times

Human-verified similar examples from authoritative sources

Similar Expressions

43 human-written examples

By commercial carrier you'd have to depart the prior day to make these kickoffs.

Forbes

On Thursday three analysts called the prior day's price action "delusional".

Forbes

The offer represents a 51% premium to the stock’s prior day close of $45.23.

Forbes

Altria's buying price represents only a 3% premium to UST's close on the prior day of trading.

Forbes

Adidas agreed to pay $59 for each Reebok share, a 34% premium over Reebok's prior day closing price.

Forbes

Expert writing Tips

Best practice

When using "prior days", ensure the context clearly establishes the reference point. For example, "In the three prior days to the event", provides a clear timeframe.

Common error

Avoid using "former days" when you mean "prior days". "Former" refers to something that was previously something else, while "prior" simply indicates a time before the current one. "Prior days" correctly indicates the days leading up to an event.

Linguistic Context

The phrase "prior days" functions as a prepositional phrase, modifying a noun or verb by specifying a timeframe before a particular event or point in time. As evidenced by Ludwig examples, it often appears in scientific and news contexts.

Expression frequency: Uncommon

Frequent in

Science

50%

News & Media

41%

Wiki

9%

Less common in

Formal & Business

0%

Encyclopedias

0%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "prior days" is a prepositional phrase used to indicate a period of time leading up to a specific event, as confirmed by Ludwig. It's grammatically correct and most frequently found in scientific and news-related contexts. While "previous days" is a close synonym, "prior days" often implies a direct relationship to a particular event. The register is generally neutral to formal. Keep in mind that the phrase is best used when the reference point is clearly established. Ludwig AI helps confirm that mixing up this phrase with "former days" is a common error. Therefore, paying attention to this nuance improves writing accuracy.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

previous days

Replaces "prior" with "previous", offering a synonym with similar formality and directness.

preceding days

Replaces "prior" with "preceding", offering a more formal synonym.

days before

Changes the structure to emphasize the temporal sequence, using "before" to indicate precedence.

earlier days

Emphasizes the temporal aspect of being earlier, suitable when comparing different periods.

days leading up to

Highlights the days that incrementally approach a specific event.

in the days leading up

This adds a bit of narrative feel to it

the days beforehand

Uses "beforehand" to indicate a time before a certain point, adding a conversational tone.

the days in advance

This one sounds more proactive, like in days in advance of a planned event

the days that came before

Emphasizes the sequential nature of time.

over the past few days

This suggest an extended period rather than specific event.

FAQs

How can I use "prior days" in a sentence?

You can use "prior days" to refer to a period of time leading up to a specific event or date. For instance, "The agricultural use in the "prior days" was significantly associated with air concentrations".

What's a more formal way to say "prior days"?

A more formal alternative to "prior days" is "preceding days". This term is often found in academic and professional writing where a slightly elevated tone is preferred.

Is there a difference between "prior days" and "previous days"?

While both "prior days" and "previous days" are similar, "prior" often implies a direct relationship to a specific event or point in time, whereas "previous" simply indicates something that came before.

What are some common contexts where I might use "prior days"?

"Prior days" is often used in scientific research to describe conditions leading up to an experiment or event, in news reporting to discuss events before a significant incident, and in historical accounts to describe periods of preparation or anticipation.