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
completed on day
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "completed on day" is not correct as it lacks specificity and context in written English.
It can be used when referring to a specific day on which a task or project was finished, but it should be followed by a specific date or day of the week for clarity. Example: "The project was completed on day 30 of the timeline."
⚠ May contain grammatical issues
Science
News & Media
Alternative expressions(4)
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
14 human-written examples
Dominant arm MH, MS and UUD radius scans were completed on day one; repeated twice (with repositioning) three to seven days later.
On discharge, he was given oral dexamethasone (4 mg twice daily for 4 days) and oral metoclopramide (30 mg every 6 hours for 4 days), to be completed on day 9 (ie, the day he presented to the hospital).
The CCQ was completed on day 'zero' and subsequently once every 7 days.
Most bar Llong believed Lyon nicked an attempted sweep shot onto his shoulder, the ball popping to gully where the catch was completed on day two of the third Test between Australia and New Zealand in Adelaide.
News & Media
Valproate treatment was titrated up to 1500 mg/day by Day 6 of treatment, cue testing was completed on Day 8 of treatment, and all study participants underwent a washout period of 5 days between active and placebo medication treatment periods.
Science
Scenarios were completed on day 2 and day 9. Prior to the first simulation, participants were randomly divided into two groups.
Academia
Human-verified similar examples from authoritative sources
Similar Expressions
46 human-written examples
A small one will be completed on Sunday in Central Park.
News & Media
In its poll completed on Monday, Obama was leading by one point.
News & Media
The World Snooker Championship is played over 17 days at the Crucible in Sheffield with the final being completed on Monday, 6 May.
News & Media
An autopsy was completed on Saturday.
News & Media
The deal was completed on Tuesday.
News & Media
Expert writing Tips
Best practice
For clarity, specify a numbered day (e.g., "completed on day 5") or replace "day" with a specific day of the week (e.g., "completed on Monday").
Common error
Avoid using the phrase "completed on day" without specifying which day. Instead, provide a numbered day or day of the week to provide necessary context.
Source & Trust
88%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase primarily acts as part of an adverbial phrase modifying a verb, specifying when an action was finalized. However, as Ludwig AI indicates, the phrase is grammatically incorrect without a specific day (number or day of week).
Frequent in
Science
50%
News & Media
50%
Formal & Business
0%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, while the phrase "completed on day" appears in various contexts like news and scientific articles, Ludwig AI marks it as grammatically incorrect due to its lack of specificity. To rectify this, ensure to include a numbered day or a specific day of the week. Alternatives such as "finished on day" or specifying the exact date provide greater clarity and grammatical accuracy. Always aim for precision to avoid ambiguity in your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
finished on day
Replaces "completed" with "finished", offering a slightly more informal tone.
concluded on day
Substitutes "completed" with "concluded", adding a sense of finality and formality.
was done on day
Uses a more direct and simple phrasing to indicate completion.
wrapped up on day
Employs a colloquial term "wrapped up" for "completed", making it less formal.
brought to completion on day
Rephrases to highlight the process of reaching completion on a specific day.
reached its end on day
Focuses on the termination aspect, indicating the end point was reached.
achieved on day
Highlights the accomplishment aspect of finishing something on that day.
finalized on day
Replaces "completed" with "finalized", suggesting the last touches were applied.
executed on day
Uses "executed" to specify the action was carried out and finished that day.
fulfilled on day
Suggests that a requirement or task was met or satisfied by that specific day.
FAQs
How can I properly use "completed on day" in a sentence?
For correct usage, always specify the day either numerically (e.g., "completed on day 3") or by the day of the week (e.g., "completed on Monday"). Otherwise, the phrase is grammatically incorrect and lacks context.
What are some alternatives to "completed on day"?
Consider alternatives like "finished on day", "concluded on day", or specifying the exact date for better clarity.
Is it better to say "completed on day" or "completed on [date]"?
"Completed on [date]" provides more specific information and is generally preferred. "Completed on day" requires a numerical day or day of the week to be grammatically correct.
What's the difference between "completed on day" and "finished on day"?
While both phrases indicate completion, "finished on day" is slightly less formal. Both still require a specified day (numerical or day of the week) to be correct.
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
88%
Authority and reliability
2.8/5
Expert rating
Real-world application tested