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
In advance of either
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "In advance of either" is correct and usable in written English.
It can be used when referring to actions or preparations that need to be completed before one of two options or events occurs. Example: "Please submit your report in advance of either the meeting or the deadline to ensure we have enough time to review it."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(6)
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
3 human-written examples
"We do not foreclose the possibility of doing something in advance of either report," the official said.
News & Media
PTENpc−/−/Hi-MYC bigenic mice have large prostatic adenocarcinomas at 3 months (Fig. 2), well in advance of either of the well-established single lesion models, which at this stage harbor mPIN exclusively (Fig. 2).
Science
No special experimental training was provided in advance of either testing round, and participants were not told that they would form part of a longitudinal study, so they had no experimentally-driven motivation to practice these skills in the time period between tests.
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
In most cases, studios or publicists reach out to us a few weeks in advance of a film's opening, offering either in-person screenings or computer links.
News & Media
Observers are encouraged to review these pages to confirm the observation setup well in advance of their LTS observation date and either submit changes or else confirm that the configuration is correct to their uplink contact scientist.
Academia
This would leave California's rural communities, farmworkers and policymakers with partial information: either notice in advance of when and where a pesticide might be applied, or data on how much was actually applied and whether it was in the air at levels that exceeded health standards.
News & Media
With Sen. Frank Lautenberg's (D-N.J). passing, attention turns to Gov. Chris Christie (R), who will likely appoint a successor in advance of a special election either before this November's gubernatorial election, coinciding with that election, or in 2014.
News & Media
Roosevelt, Eisenhower, Nixon, Reagan, Clinton and both Bushes all looked like the favorite to win a year in advance of their re-election battles, either having strong approval ratings or good-enough ones accompanied by robust economic numbers.
News & Media
Members of the public who wish to provide their views on the proxy process, either in advance of or after the roundtable, may submit comments electronically or on paper.
Academia
Build some public buzz around your company, either in advance of an A, or for customer acquisition, or just because.
News & Media
The embargo can be released at a time agreed by the authors, either in advance of the submission of any resulting article, or at the time of open publication of that article.
Science
Expert writing Tips
Best practice
When using "in advance of either", ensure that the two options being referred to are clearly defined and easily understood by the reader.
Common error
Avoid using "in advance of either" when referring to more than two options; the phrase is specifically designed for scenarios involving two choices. If you have multiple options, consider using a phrase like "in advance of any of these" or rephrasing for clarity.
Source & Trust
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "in advance of either" functions as a prepositional phrase indicating timing or preparation. It introduces the idea that an action or event occurs before one of two specified possibilities. Ludwig AI's examples illustrate its use in diverse contexts like policy changes and scientific research.
Frequent in
News & Media
33%
Science
33%
Academia
33%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "in advance of either" is a prepositional phrase used to denote an action or preparation that takes place before one of two possibilities. Ludwig AI highlights that this phrase is grammatically correct and is commonly used across various fields, including news, science, and academia. When using this phrase, ensure that the context clearly defines the two options being referenced. Alternatives like "prior to either" or "before either" can be considered for stylistic variation, but be aware of potential differences in formality. Remember that the phrase is only applicable to two choices, as noted in the writing guidance.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
Prior to either
Replaces "in advance" with "prior", indicating a slightly more formal tone.
Before either
Uses the simpler term "before" instead of "in advance of", making it more direct.
Ahead of either
Substitutes "in advance" with "ahead", suggesting a leading position in time.
In anticipation of either
Emphasizes the expectation of one of the two options occurring.
Leading up to either
Focuses on the period before one of the two possibilities.
To prepare for either
Highlights the preparatory action taken for the potential events.
In preparation for either
Similar to 'to prepare for', but uses a nominal phrase.
Before the occurrence of either
A more verbose alternative that explicitly states the timing.
Previously to either
A more formal and less common way to say "before either".
Earlier than either
Focuses on the timing, indicating something happens at an earlier point.
FAQs
How can I use "In advance of either" in a sentence?
The phrase "in advance of either" is used to indicate that something is done or prepared before one of two possible events or options. For example, "Submit your application "in advance of either" the deadline or the interview date".
What's a simpler way to say "In advance of either"?
A simpler way to express the same idea is to use "before either". For instance, instead of saying "Make the payment in advance of either the due date or the late fee", you can say "Make the payment before either the due date or the late fee".
How does "Prior to either" compare to "In advance of either"?
"Prior to either" and "in advance of either" are quite similar, but "prior to" might be perceived as slightly more formal. Both indicate something happening before one of two options, but "prior to" often implies a more structured or official context.
Is it correct to use "In advance of either" if I have more than two options?
No, "in advance of either" is specifically for two options. If you have more than two, consider using phrases like "in advance of any of these", or rephrase to clarify the options.
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
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested