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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
speak on
Grammar usage guide and real-world examplesUSAGE SUMMARY
"speak on" is not grammatically correct in written English.
To use it correctly, you would need to add an appropriate preposition such as "about" or "of". Example: I would like to speak on the challenges faced by small business owners.
⚠ May contain grammatical issues
News & Media
Science
Formal & Business
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
60 human-written examples
That's one thing I can speak on".
News & Media
Mr. Hurd will speak on Monday.
News & Media
I would love to speak on this".
News & Media
Nobody, however, would speak on the record.
News & Media
"But let him speak on that first.
News & Media
They wouldn't speak on the record?
News & Media
Could speak on any subject knowledgeably.
News & Media
We speak on a daily basis.
News & Media
But they did not speak on Saturday.
News & Media
"That's for Ray to speak on.
News & Media
Abbott is scheduled to speak on Saturday.
News & Media
Expert writing Tips
Best practice
In formal writing, always use a preposition like "about" or "of" after "speak". For example, say "speak about" or "speak of" instead of just "speak on".
Common error
Avoid using "speak on" without a preposition in formal writing. This omission is a common error that makes the phrase grammatically incorrect. Always include "about" or "of" to ensure correctness.
Source & Trust
86%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "speak on" functions as a verb phrase, but requires a preposition for grammatical correctness in written English. Ludwig AI indicates that it needs a preposition like "about" or "of" to be grammatically sound.
Frequent in
News & Media
34%
Wiki
13%
Formal & Business
12%
Less common in
Science
12%
Reference
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, while the phrase "speak on" is frequently encountered, it's generally considered grammatically incorrect in formal written English. Ludwig AI suggests using "speak about" or "speak of" instead, ensuring grammatical correctness and clarity. Although found in various contexts, including News & Media, Wiki, and Formal & Business communications, its informal nature means it's best to opt for more precise alternatives like "discuss", "address", or "comment on" in professional and academic settings.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
speak about
Adds a preposition to make the phrase grammatically sound.
comment on
Implies a brief expression of opinion or reaction.
address
Suggests a more formal and direct engagement with a topic.
discuss
Implies a more in-depth conversation or examination of the topic.
talk about
A more casual and general way of referring to speaking about something.
elaborate on
Indicates a detailed explanation or expansion of a topic.
expound on
Similar to elaborate, but suggests a more authoritative and thorough explanation.
opine on
Implies expressing a personal opinion in a formal or public setting.
pontificate about
Suggests speaking at length in a dogmatic or opinionated manner.
lecture on
Implies a formal, educational presentation on a specific subject.
FAQs
How to properly use "speak on" in a sentence?
While "speak on" is often heard in informal speech, it's not grammatically correct in formal writing. Use "speak about" or "speak of" instead. For example, "I would like to "speak about" the challenges...".
What can I say instead of "speak on" to sound more professional?
For a more professional tone, consider using alternatives like "address", "discuss", or "comment on". These options are grammatically sound and suitable for formal contexts.
Is "speak on" grammatically correct?
No, "speak on" is generally considered grammatically incorrect in formal written English. The correct forms are "speak about" or speak of.
Which is more appropriate: "speak on" or "speak about"?
"Speak about" is more appropriate in formal settings and writing. While "speak on" might be used informally, "speak about" ensures grammatical correctness and clarity.
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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
86%
Authority and reliability
2.8/5
Expert rating
Real-world application tested