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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
had once submitted
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "had once submitted" is correct and usable in written English.
It can be used to indicate that a submission occurred at some point in the past, typically in a context where the timing or the fact of the submission is relevant to the current discussion. Example: "She had once submitted her application to the program, but she decided to withdraw it later."
✓ Grammatically correct
News & Media
Science
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
2 human-written examples
There Jews were free to practice their faith openly, though any Jew who had once submitted to Islam courted death if he relapsed to Judaism.
Encyclopedias
Occasionally an interpretation falters, as when Hayman squeezes much meaning out of a single cryptic remark by Jung, in a letter to Freud, that he had once "submitted" to an older man.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
Second, fertile countries are both more desirable than barren countries and easier to conquer: they "are always of a level surface, where the inhabitants are unable to dispute against a stronger power; they are then obliged to submit; and when they have once submitted, the spirit of liberty cannot return; the wealth of the country is a pledge of their fidelity" (SL 18.2).
Science
I have once again submitted an assisted dying bill to the ballot because we cannot continue to deny terminally ill people the dignity and choice they are entitled to at the end of their life.
News & Media
He and his party, the MPLA, have only once submitted to a proper nationwide election, and that was 12 years ago.
News & Media
Once submitted, shoppers have to be approved before they are allowed to log in and schedule a time to see the merchandise at the showroom.
News & Media
You can select to either view the PIN immediately once submitted, or have the PIN emailed to you.
Wiki
Any other ways you've put to use an application essay, once submitted?
News & Media
Asked how many cervical cancer reports they had submitted in the previous year, four of the districts coordinators reported to have submitted in all the quarters, one had only submitted twice and two districts once.
Science
Once submitted you are done, congratulations!
Wiki
Olson et al [37] also found that there was no evidence that study publication bias occurred once manuscripts had been submitted to a medical journal.
Science
Expert writing Tips
Best practice
To further emphasize that the submission was a one-time event, consider using phrases like "had only once submitted".
Common error
Avoid using "had once submitted" when the context requires a simple past tense ("submitted") or present perfect tense ("has submitted"). Make sure the past perfect tense is appropriate to show that the submission occurred before another point in time.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "had once submitted" functions as a past perfect verb phrase. It indicates that an action (submitting) was completed at some point in the past before another action or time. As Ludwig AI confirms, the phrase is grammatically sound and usable.
Frequent in
News & Media
33%
Science
33%
Wiki
11%
Less common in
Formal & Business
0%
Encyclopedias
16%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "had once submitted" is a grammatically correct past perfect construction used to indicate that an action of submitting occurred at some point in the past, before another specified time. Ludwig AI confirms its validity and usefulness. It is more common in neutral to formal contexts like news articles and scientific papers. While "had previously submitted" and "had formerly submitted" can serve as alternatives, it's important to maintain accuracy in tense and context. A key takeaway is to use this phrase when emphasizing the timing of a past submission relative to another event.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
had previously submitted
Replaces "once" with "previously", indicating a submission at an earlier time.
had formerly submitted
Uses "formerly" instead of "once" to suggest a submission in the past.
had at one time submitted
Adds "at one time" for emphasis, highlighting that the submission happened in the past but not necessarily recently.
had in the past submitted
Rephrases "once" as "in the past", focusing on the past nature of the submission.
once submitted
Omits "had", creating a simpler past tense construction.
had already submitted
Focuses on the completion of the submission action at an earlier time.
had submitted in the past
Similar to "had in the past submitted", but slightly more concise.
submitted previously
Reorders the words for a slightly different emphasis.
had submitted before
Uses "before" to indicate a prior submission.
had submitted on a prior occasion
Formal rephrasing emphasizing a specific previous instance of submission.
FAQs
How can I rephrase "had once submitted" to sound more formal?
You can use more formal alternatives like "had previously submitted" or "had formerly submitted" to convey a similar meaning with increased formality.
Is it correct to say "has once submitted" instead of "had once submitted"?
No, "has once submitted" uses the present perfect tense, which indicates an action completed at an unspecified time before now. "Had once submitted" uses the past perfect, indicating an action completed before another point in the past.
What's the difference between "had once submitted" and "submitted"?
"Had once submitted" (past perfect) emphasizes that the submission occurred before a specific point in the past. "Submitted" (simple past) simply states that the action happened in the past without reference to another time.
When should I use "had only once submitted" instead of "had once submitted"?
Use "had only once submitted" to emphasize that the submission occurred a single time and no more. This highlights the uniqueness or infrequency of the action compared to "had once submitted", which simply acknowledges that a submission occurred at some point.
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested