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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
on a completely different topic
Grammar usage guide and real-world examplesUSAGE SUMMARY
'on a completely different topic' is correct and usable in written English.
You can use it to introduce an entirely new topic in a conversation or piece of writing. For example, "Now, on a completely different topic, I wanted to tell you about my plans for the weekend."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(20)
switching gears
on an unrelated note
turning to another matter
by the way
moving on to something else
in other news
changing the subject
on a completely different aspect
on a completely different subject
on a completely different point
on a completely different persona
on a completely different career
on a completely different series
on a completely different ticket
on a completely different principle
on a completely different shelf
on a completely different tone
on a completely different sense
on a completely different complexion
on a completely different trajectory
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
5 human-written examples
An interesting effort strong messaging on a completely different topic to the one we were asking for your hot takes on.
News & Media
An interesting effort – strong messaging on a completely different topic to the one we were asking for your hot takes on.
News & Media
On a completely different topic, some dry data that might make interesting and even encouraging reading.
News & Media
Perhaps he was answering a question from another reporter on a completely different topic?
News & Media
And the second question on a completely different topic -- the President opposes same-sex marriage, but he supports giving same-sex couples the same rights as married people.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
While this could, maybe, possibly mitigate the severity of what he said, it's important to reiterate that he had apparently moved on to a completely different topic.
News & Media
I've had to develop the capacity to switch every halfhour or 45 minutes to a completely different topic.
News & Media
The same discussion holds for examining the effect of high water saturation on CO2 VAPEX, which is a completely different topic.
However, the map also illustrates another point about a completely different topic, one that is even bigger and further reaching than global obesity – the problem of information overload.
News & Media
Matthews first identified the loneliness neurons somewhat serendipitously, while studying a completely different topic.
But execution is a completely different topic, and industry validation is a third, separate conversation.
News & Media
Expert writing Tips
Best practice
Use "on a completely different topic" to clearly signal a shift, especially in formal writing or presentations where clarity is crucial.
Common error
Avoid using "on a completely different topic" as a mere filler. Ensure the new topic is genuinely distinct and relevant to the overall context, or the transition might seem jarring.
Source & Trust
84%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "on a completely different topic" functions as a transitional phrase. It serves to explicitly signal a shift in the subject matter, alerting the audience or reader that a new, unrelated discussion is about to begin. As Ludwig AI indicates, the phrase is correct and usable in written English.
Frequent in
News & Media
60%
Science
20%
Wiki
20%
Less common in
Formal & Business
0%
Academia
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "on a completely different topic" is a useful transitional phrase for clearly signaling a change of subject. Ludwig AI confirms that this phrase is grammatically correct and suitable for written English. While not the most formal option, it serves well across diverse contexts, particularly in news, media, and general conversation. For more formal settings, consider alternatives such as "turning to another matter". Remember to use the phrase judiciously to avoid abrupt or unnecessary topic shifts.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
on an unrelated note
Indicates the new topic has no direct connection to the previous one.
turning to another matter
More formal and suitable for written communication or presentations.
moving on to something else
Suggests a progression to a new, potentially pre-planned topic.
switching gears
More informal and suggests a quicker, more abrupt change of subject.
in other news
Mirrors a news-reporting format, suitable for introducing unrelated updates.
changing the subject
A direct and less subtle way to indicate a topic shift, sometimes perceived as dismissive.
to digress for a moment
Acknowledges a temporary departure from the main topic.
let's talk about something different
Informal and conversational, inviting a change in topic.
by the way
A common phrase for introducing a slightly off-topic point, often seemingly casual.
now for something completely different
Humorous and directly references Monty Python's Flying Circus, implying a significant change of topic.
FAQs
How can I use "on a completely different topic" in a sentence?
You can use "on a completely different topic" to introduce a new subject that is unrelated to the previous discussion. For example, "Now, "on a completely different topic", let's discuss the budget."
What are some alternatives to "on a completely different topic"?
Alternatives include phrases like "switching gears", "on an unrelated note", or "turning to another matter", depending on the context and desired level of formality.
Is it appropriate to use "on a completely different topic" in formal writing?
Yes, "on a completely different topic" is acceptable in formal writing to clearly signal a change of subject. However, consider more formal alternatives like "turning to another matter" for a more sophisticated tone.
What's the difference between "on a completely different topic" and "by the way"?
"On a completely different topic" explicitly indicates a major subject shift, while "by the way" is often used to introduce a related but secondary piece of information or a minor digression.
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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
4.1/5
Expert rating
Real-world application tested