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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
either after or
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "either after or" is not correct and usable in written English as it is incomplete.
It typically requires a second option to complete the comparison or choice being presented. Example: "You can choose to meet either after lunch or before dinner."
⚠ May contain grammatical issues
Science
News & Media
Alternative expressions(3)
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
16 human-written examples
I recommend if you want to read Katy you should read What Katy Did either after or before.
News & Media
We used another working memory task (i.e., 2-back task) that was performed either after or during pain induction.
Science
In this sentence, the presence of the phrase 'due to' allows us to infer that the temporal relation between TEST event 'Her creatinine' and PROBLEM event 'her worsening liver failure' is either After or Overlap_After.
For many years there have been three stages in the selection of students for UK medical schools: assessment of academic qualifications and further qualities obtained from the UCAS (Universities and Colleges Admissions Service) application form, usually leading to invitation to interview, and selection for offer (either after or without interview).
Science
A primary (and legitimate) goal of the programs, after all, is to find and identify _un_known, _un_suspected terrorists, either after or, preferably, in advance of an actual attack.
News & Media
A primary (and legitimate) goal of the programs, after all, is to find and identify unknown, unsuspected terrorists, either after or, preferably, in advance of an actual attack.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
44 human-written examples
And the either/or construction is not parallel; put "either" after "died," or delete it.
News & Media
No statistically significant differences were observed between fish after space flights and ground controls either after 9 or 16 days.
Science
Symptoms were aggravated either after activities or lying flat.
Science
The session ended either after 4 h or after 40 min without an earned infusion.
Then, all participants were re-administered the ANT, immediately after either painful stimulation or after acupuncture.
Expert writing Tips
Best practice
Ensure that when using "either", it is paired with "or" to present a clear choice between two options. For example, use "either before or after" instead of just "either after or".
Common error
Avoid using "either" without a corresponding "or". The phrase "either after or" is incomplete and grammatically incorrect; complete the comparison by providing two distinct alternatives.
Source & Trust
86%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "either after or" functions as a connector indicating a choice of sequence, but it is grammatically incomplete. As Ludwig AI points out, it requires a second option to create a grammatically correct "either/or" construction. Examples in Ludwig show its use in various contexts, but its incorrect structure undermines its effectiveness.
Frequent in
Science
50%
News & Media
43%
Wiki
7%
Less common in
Formal & Business
0%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, while the phrase "either after or" appears in a variety of sources, including scientific and news media, it's grammatically incorrect due to its incomplete "either/or" construction. Ludwig AI confirms that this phrase needs a second option to be grammatically sound. The phrase aims to present a choice in the sequence of events, but its structural issue reduces clarity. For improved writing, use complete constructions like "either before or after" or "either following or" to ensure grammatical correctness and clear communication. Avoid using the incomplete phrase in formal writing to maintain precision and credibility.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
either following or
This alternative provides a more grammatically correct parallel structure for the 'either/or' construction.
either subsequent to or
This phrase offers a formal and grammatically precise alternative, suitable for academic and technical writing.
either before or after
This alternative reverses the order of events but maintains the same meaning and completes the "either/or" construction.
whether after or
Using "whether" instead of "either" still needs a second choice, but emphasizes conditionality rather than choice.
either during or after
This adds the dimension of simultaneous action, broadening the temporal scope.
after, or
This simplifies the structure by omitting "either", suitable when the choice is implicitly understood.
subsequent to, or
Using "subsequent to" offers a more formal tone, emphasizing sequence.
either simultaneously or after
This alternative is more precise indicating simultaneous actions versus subsequent.
first after, or
Implies a sequence where the first step is 'after' something, with a second unspecified option. Only suitable for specialized context.
both after and
This shifts the meaning to include two actions both occurring after a specific event, losing the 'either/or' choice.
FAQs
How to properly use the phrase "either...or"?
The construction "either...or" presents a choice between two options. Ensure both options are clearly stated and grammatically parallel. For instance, "You can choose "either to stay" or "to leave"" provides two distinct and parallel alternatives.
What are some alternatives to "either after or"?
Alternatives include phrases like "either following or", "either subsequent to or", or "either before or after". These provide a more grammatically complete and clear expression of choice or sequence.
Is "either after or" grammatically correct?
No, the phrase "either after or" is grammatically incomplete. The "either/or" construction requires two distinct and parallel alternatives. Using it incompletely can lead to confusion and is generally considered incorrect in formal writing.
How can I improve clarity when using "either...or" in my writing?
To enhance clarity, ensure that the options presented after "either" and "or" are grammatically similar. For example, use "either with a noun or "with a noun phrase"" to maintain a parallel structure and avoid ambiguity.
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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
86%
Authority and reliability
2.8/5
Expert rating
Real-world application tested