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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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completed on

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "completed on" is correct and usable in written English.
It is typically used to indicate the date or time when a task or project was finished. Example: "The report was completed on March 15, 2023."

✓ Grammatically correct

News & Media

Science

Wiki

Human-verified examples from authoritative sources

Exact Expressions

56 human-written examples

I really like the one I just completed on masculinity.

Mating is completed on the wing.

An autopsy was completed on Saturday.

News & Media

The New York Times

The transaction was completed on Oct. 30.

News & Media

The New York Times

The deal was completed on Tuesday.

News & Media

The New York Times

The deal was completed on 11 March.

It was announced in January; it was completed on Monday.

News & Media

The New York Times

The city says the repairs were completed on Sept. 26.

News & Media

The New York Times

Are any of the articles completed on the front page?

News & Media

The New York Times
Show more...

Human-verified similar examples from authoritative sources

Similar Expressions

2 human-written examples

Questionnaire distributed by internet, to be completed on-line.

Questionnaires were completed on-line (Survey Monkey).

Expert writing Tips

Best practice

When specifying a date with "completed on", ensure that the date format is consistent throughout your document. For instance, choose between "January 1, 2025" and "01/01/2025" and stick to it.

Common error

Avoid using "will be completed on" when referring to something that has already occurred. Instead, use "was completed on" for past events.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

84%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "completed on" functions as a temporal marker, indicating when an action or process reached its conclusion. It serves to specify the date or time of completion, providing a clear temporal reference point, as seen in Ludwig's examples.

Expression frequency: Very common

Frequent in

News & Media

37%

Wiki

22%

Science

18%

Less common in

Formal & Business

7%

Encyclopedias

3%

Reference

0%

Ludwig's WRAP-UP

In summary, "completed on" is a frequently used and grammatically sound phrase that serves to specify the date or time when something was finished. As Ludwig AI confirms, the phrase is readily accepted and understandable in written English. Its usage spans across various contexts, including news, science, and general writing, and it maintains a neutral register. When using "completed on", ensure correct tense and consistent date formats for clarity. Alternative phrases like "finished on" or "finalized on" can also be used depending on the specific context. Remember that "completed on" specifies the exact completion date, while "finished by" indicates a deadline.

FAQs

How can I use "completed on" in a sentence?

Use "completed on" to specify the date when something was finished. For example, "The project was completed on July 29, 2025."

What are some alternatives to "completed on"?

You can use alternatives like "finished on", "finalized on", or "concluded on" depending on the context.

Is it correct to say "will be completed on"?

Yes, "will be completed on" is grammatically correct when referring to a future event. For example, "The construction will be completed on December 31, 2025."

What's the difference between "completed on" and "finished by"?

"Completed on" specifies the exact date of completion, while "finished by" indicates a deadline or latest possible completion date. For instance, "The task was completed on Monday" versus "The task was finished by Monday".

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Source & Trust

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Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: