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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
in affect
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "in affect" is not correct; the correct phrase is "in effect." You can use "in effect" to indicate that something is currently in operation or has a certain result or consequence.
Example: "The new policy will be in effect starting next month."
⚠ May contain grammatical issues
Science
News & Media
Encyclopedias
Wiki
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
Exercise also increased affective activation, but there was no mediating effect of change in affect on chocolate consumption.
Science
A kind of darker and mysterious undercurrent was giving way to something lighter in affect.
News & Media
How does the need to plug herself in affect her fantasies?
News & Media
As a sex object she was far more androgynous in affect than she appears in the photograph.
News & Media
The material is derived from a 2010 novel by Don Winslow, which was minimalist in style and cool in affect.
News & Media
He said it was genetically unrelated to other herpes viruses, including those that affect humans, but was similar in affect and structure.
News & Media
And though Warhol dealt in images, his voice on the page — flat, lacking in affect, with a 4/4 rhythm of unadorned declarative sentences — is instantly recognizable.
News & Media
What makes the film thrillingly different in content and in affect, in emotional energy and in visual imagination is its metaphysical and religious element.
News & Media
What makes the film thrillingly different — in content and in affect, in emotional energy and in visual imagination — is its metaphysical and religious element.
News & Media
Ms Gillard is reported to have neglected consulting with him before she announced what was in affect a diplomatic bombshell, last July.
News & Media
And at 12 30 a.m. an edition of the festival's regular Superjam feature began, this one almost the opposite in affect of the Death Grips set.
News & Media
Expert writing Tips
Best practice
Double check if you are trying to use the word "effect", meaning result, rather than "affect", meaning influence, to avoid misspelling.
Common error
The most common error is using "affect" when "effect" is intended. "Affect" is typically a verb meaning to influence, while "effect" is usually a noun meaning a result or consequence. When describing something that is currently active or operative, the correct term is "in effect".
Source & Trust
79%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "in affect" functions as a prepositional phrase, often intended to modify a verb or noun. However, as Ludwig AI points out, it is generally considered an error for "in effect." Therefore, its intended function is usually to indicate that something is operational or has a specific result, but the incorrect usage undermines this.
Frequent in
Science
27%
News & Media
23%
Wiki
10%
Less common in
Encyclopedias
3%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, while the phrase "in affect" appears frequently, Ludwig AI identifies it as generally incorrect. It is often a misspelling of "in effect", which is the correct phrase to use when indicating that something is currently operational or producing a specific result. The frequent misuse spans various contexts, including science, news, and general writing, highlighting a common confusion between "affect" and "effect". To ensure clarity and correctness, always use "in effect" when you mean 'in operation' or consider alternative phrases like "in practice" or "in reality" depending on the intended meaning.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
in effect
Corrects the common misspelling and replaces "affect" with "effect", changing the meaning to 'in operation' or 'in reality'.
in practice
Focuses on how something works in real-world situations, emphasizing the practical application.
in reality
Emphasizes the actual state of affairs, highlighting what is truly happening.
in operation
Highlights the active functioning or implementation of something such as a system, rule, or plan.
effectively
Describes the manner in which something produces a desired result or impact.
virtually
Indicates something is practically or nearly equivalent to a specified condition or outcome.
for all intents and purposes
Suggests that something is considered to be true or factual, even if not technically or strictly so.
to all effects
Implies having a similar result or outcome but is an archaic expression.
in substance
Emphasizes the essential meaning or core concept, setting aside minor or technical details.
as a result
Highlights the cause-and-effect relationship between events or conditions.
FAQs
What is the correct way to use "in affect"?
The phrase "in affect" is generally considered incorrect. The correct phrase is "in effect", which means 'in operation' or 'in reality'.
What does "in effect" mean, and how does it differ from "in affect"?
"In effect" means that something is currently active or operative. It indicates that a rule, law, or system is in force. "In affect" is usually a misspelling and doesn't carry a standard meaning in English.
Can I use "in affect" in any context?
No, it is not recommended to use "in affect" in any context, as it is widely considered a mistake. Always use "in effect" instead.
What are some alternatives to using "in effect"?
Depending on the context, you can use alternatives like "in practice", "in reality", or "in operation" instead of "in effect".
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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
79%
Authority and reliability
2.8/5
Expert rating
Real-world application tested