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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
per occasion
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "per occasion" is correct and usable in written English.
It can be used to indicate something that occurs or is done for each individual instance or event. Example: "We will provide refreshments per occasion, depending on the number of guests attending."
✓ Grammatically correct
Science
News & Media
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
60 human-written examples
Total APM scores increased significantly across the three occasions (approximately two items per occasion).
They also decreased their D/DD by 2.4 drinks per occasion, and decreased their PHDD by 21.6%.
Science
Wisconsin binge drinkers also put away the most alcohol, averaging nine drinks per occasion.
News & Media
Percentage of days abstinent (PDA), drinks per drinking day (D/DD), and percentage of heavy drinking days (PHDD, defined as ≥4 drinks per occasion for females and ≥5 drinks per occasion for males) were recorded for the 6 weeks preceding laboratory testing and for the 6 weeks following participation in the study.
Science
The animals were sacrificed by decapitation 3 and 14 days after study start (n = 10 group per occasion).
Science
An at-risk drinker was defined as someone who had >14 drinks per week or more than 4 drinks per occasion for men aged ≤65 years, and as 7 drinks per week or more than 3 drinks per occasion for all women or men aged >65 years.
Science
The estimated average pattern of drinking of 1 4 drinks, with 4 being the most detrimental pattern and mainly based on heavy drinking and drinking to intoxication per occasion [4].
Decide on one outfit per day (or per occasion, if you will need multiple outfits for each day).
News & Media
She says her USP lies in the customised 'intricate designs' as per occasion or the person for whom the cake is baked.
News & Media
These SNPs also associated with higher average levels of alcohol drinking per occasion in males.
Science
In male adolescents, both htSNPs were associated with lifetime prevalence of drunkenness and with elevated maximum amounts of alcohol intake per occasion (≥16 g of alcohol per occasion), as measure for binge drinking pattern.
Science
Expert writing Tips
Best practice
When using "per occasion", ensure clarity about what constitutes an "occasion" in your context. This avoids ambiguity and ensures your meaning is accurately conveyed.
Common error
Avoid confusing "per occasion" (meaning 'each time') with "on occasion" (meaning 'sometimes'). Using them interchangeably can significantly alter the intended meaning of your sentence.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "per occasion" functions as an adverbial prepositional phrase, modifying verbs or clauses by specifying the frequency or circumstances under which an action occurs. As Ludwig AI confirms, this phrase is usable in written English. Examples from Ludwig show it quantifying aspects like drinks consumed or medication used.
Frequent in
Science
78%
News & Media
15%
Formal & Business
7%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "per occasion" is a grammatically sound and frequently used prepositional phrase that specifies the frequency or quantity related to each individual instance of an event, as Ludwig AI confirms. Predominantly found in scientific and news contexts, it serves to clarify rates or amounts on a "per event" basis. Common errors involve confusing it with "on occasion", which has the opposite meaning. Alternatives include "each time" and "every instance", offering slightly different nuances. As Ludwig's examples showcase, ensure clarity regarding what defines an 'occasion' to avoid ambiguity in your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
each time
Focuses on the temporal aspect of each instance, replacing "occasion" with "time".
every instance
Emphasizes each individual event, swapping "occasion" for the more formal "instance".
on each event
Replaces "occasion" with the more general "event", highlighting a specific occurrence.
for every occurrence
Uses the more formal "occurrence" instead of "occasion", stressing each instance something happens.
in each case
Shifts the focus to a specific scenario or situation, using "case" instead of "occasion".
at every opportunity
Suggests that something happens whenever a chance arises, differing slightly from a planned "occasion".
with each instance
Highlights the correlation or effect tied to each specific event.
on a per-event basis
Formal alternative, commonly used in business settings to describe costs or calculations.
for each single time
Stresses the individual nature of each separate instance something happens, thus enforcing/clarifying 'single time' usage.
each and every time
Emphasizes every time, with no exceptions. It's redundant and gives strength to the meaning.
FAQs
How is "per occasion" used in a sentence?
The phrase "per occasion" specifies the frequency or amount related to each instance of an event. For example, "The venue charges a cleaning fee "per occasion"" means the fee is applied every time the venue is used.
What's the difference between "per occasion" and "on occasion"?
"Per occasion" means each and every time something happens, while "on occasion" means sometimes or occasionally. They have opposite meanings.
What are some alternatives to saying "per occasion"?
Depending on the context, you can use phrases like "each time", "every instance", or "on each event" instead of "per occasion".
Is it more formal to say "per occasion" or "each time"?
"Per occasion" can be considered slightly more formal, particularly in business or scientific contexts. "Each time" is generally more informal and suitable for everyday conversation.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested