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
adverse occurrence
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "adverse occurrence" is correct and usable in written English.
It can be used in contexts related to negative events or incidents, particularly in fields like healthcare, insurance, or risk management. Example: "The report highlighted several adverse occurrences that impacted patient safety during the trial."
✓ Grammatically correct
Science
News & Media
Formal & Business
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
17 human-written examples
At this point it is not known whether esophageal dysmotility is an adverse occurrence due to GER, or whether it contributes to GER in these patients.
Science & Research
Fear of flying -- we can't control it and dying that way would be horrific -- leads to driving, which feels like taking control, but which is far more likely to cause 'an adverse occurrence or event.'.
News & Media
For each adverse occurrence, each reviewer identified the most important factor for etiology, rated preventability, and provided both a JCAHO severity rating and an Adverse Occurrence Severity Score.
Our study placed emphasis on explicitly recording absence of an adverse occurrence when none occurred.
1 Among the patients with an adverse occurrence, more than half (31/53) experienced multiple events.
Numerical severity ratings using the Adverse Occurrence Severity Score showed substantial inter-rater agreement (ICC = 0.74, 95% CI = 0.68 – 0.68).
Human-verified similar examples from authoritative sources
Similar Expressions
43 human-written examples
This indicates that interventions geared toward enhancement of maternal healthcare utilisation and combating adverse occurrences aligned with maternity must focus on poor women.
Science
Categorizing adverse occurrences is problematic.
Surgical complexity influences risk of adverse occurrences.
Reviewers frequently disagree on causes of adverse occurrences.
We created a priori definitions and ascertainment criteria for 176 adverse occurrences.
Expert writing Tips
Best practice
Use "adverse occurrence" to describe events with potential harm during treatment, distinguishing it from general complications.
Common error
Avoid using "adverse occurrence" in casual conversations or informal writing where simpler terms like "bad thing" or "problem" would be more appropriate.
Source & Trust
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "adverse occurrence" functions as a noun phrase, typically serving as the subject or object of a sentence. It identifies and labels a specific type of event. Ludwig AI confirms its usability in written English.
Frequent in
Science
75%
News & Media
15%
Formal & Business
10%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
The phrase "adverse occurrence" is a grammatically correct and commonly used term to describe a negative or unwanted event, particularly in medical, scientific, and formal contexts. As Ludwig AI confirms, it is suitable for describing negative events or incidents. Its frequency is 'common', and it's most often found in scientific publications. When writing, it's best to use this phrase in formal settings and avoid it in casual conversation. Alternatives include "negative incident" and "unfavorable event". While "adverse event" is similar, it often implies a harmful outcome, while "adverse occurrence" is a more general term.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
adverse event
Replaces "occurrence" with "event", creating a very similar and often interchangeable phrase.
unfavorable event
Replaces "adverse" with "unfavorable", maintaining a similar level of formality but is less specific.
negative incident
Uses "negative" instead of "adverse" and "incident" instead of "occurrence", creating a slightly more general term.
harmful event
Emphasizes the potential for harm, making it suitable for contexts where the negative impact is central.
detrimental effect
Highlights the damaging or harmful impact, often used in technical or scientific contexts.
negative outcome
Similar to "unwanted consequence" but more concise, fitting for contexts needing brevity.
undesirable situation
Substitutes both words with synonyms, resulting in a less formal and more general expression.
unwanted consequence
Focuses on the result or outcome, suitable when emphasizing the causality of the event.
unfortunate incident
Adds a sense of bad luck or regret, which may soften the clinical tone of "adverse occurrence".
problematic situation
Indicates that the event is causing difficulties or issues, broadening the scope beyond just harm.
FAQs
How can I use "adverse occurrence" in a sentence?
You can use "adverse occurrence" to describe an unfavorable event. For example: "The study tracked the frequency of "adverse occurrence" during the clinical trial."
What's the difference between "adverse occurrence" and "adverse event"?
While similar, "adverse event" often implies that the "adverse event" resulted in harm or required intervention, whereas "adverse occurrence" is a more general term for any undesirable event.
What can I say instead of "adverse occurrence"?
Depending on the context, you can use alternatives such as "negative incident", "unfavorable event", or "harmful event".
Is "adverse occurrence" a formal term?
Yes, "adverse occurrence" is generally considered a formal term, often used in medical, scientific, and technical contexts. More informal synonyms exist, such as "bad experience" or "negative outcome".
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
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested