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
keep on investigating
Grammar usage guide and real-world examplesUSAGE SUMMARY
"keep on investigating" is a perfectly correct and usable phrase in written English.
It is typically used in contexts where someone is suggesting or encouraging another person to continue with a particular task or line of inquiry. For example: "We haven't found a resolution yet, so let's keep on investigating and see what we can uncover."
✓ Grammatically correct
News & Media
Science
Alternative expressions(20)
pursue the investigation
persevere
keep on pressing
keep on suggesting
keep on seeking
keep on searching
keep on bothering
advance
keep on checking
keep on applying
never give up
insistently inquire
keep on assuming
keep pushing forward
keep on encouraging
move onward
keep looking forward
persist in questioning
kept pushing forward
keep on considering
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
6 human-written examples
When there is nothing to say and we don't and we keep on investigating.
News & Media
Doesn't it ever wear off, the desire to keep on investigating people's sex lives?
News & Media
It will ensure the foundation will keep on investigating, just on a bigger scale and with the help of various disciplines, what is useful and relevant for cultural discourse today".
News & Media
"We keep on investigating," he tells me.
News & Media
It seems as if the skeptics do not genuinely aim at the truth (Palmer 2000; Striker 2001; Perin 2006), though they claim to keep on investigating.
Science
Trump may have dropped out of the 2012 race, but the media is just going to keep on investigating him, because why not? [New York Times].
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
54 human-written examples
Child will keep on crying, keep on crying.
Science
I just keep, keep, keep on going and I'm somewhat obsessive compulsive I think.
Science
He was the short, bespectacled, intense man who kept going, kept investigating, and kept speaking out, on the radio, in news conferences and at the head of demonstrations, year after year, in the face of constant threats and occasional beatings.
News & Media
That's why our group in IAP/ICCES keeps working on investigating and quantifying the error sources and providing our estimate on historical OHC change.
News & Media
They kept on going.
News & Media
Expert writing Tips
Best practice
When encouraging someone to "keep on investigating", consider the tone and context. In formal settings, "continue to investigate" might be more appropriate, while "keep digging into" could be suitable for informal scenarios.
Common error
Avoid using "keep on investigating" repeatedly in a short span. Vary your language by using synonyms like "continue to explore" or "persist in examining" to maintain reader engagement.
Source & Trust
82%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "keep on investigating" functions as a directive, encouraging continued action. As Ludwig AI says, it's used to suggest or encourage someone to continue with a task or line of inquiry.
Frequent in
News & Media
43%
Science
43%
Wiki
14%
Less common in
Formal & Business
0%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "keep on investigating" is a grammatically correct phrase used to encourage the continuation of an investigation or inquiry. While Ludwig AI confirms its proper usage in written English, it's important to consider the context. For formal settings, alternatives like "continue to investigate" may be more suitable. The phrase is most commonly found in News & Media and Scientific sources. Varying your language and using synonyms can enhance clarity and engagement in your writing. As seen in Ludwig's examples, the phrase underscores the importance of persistence in seeking answers.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
continue to investigate
This alternative replaces the phrasal verb "keep on" with the more formal "continue to", resulting in a slightly more professional tone.
carry on investigating
Uses the phrasal verb "carry on" instead of "keep on", offering a more colloquial alternative with a similar meaning of continuation.
persist in investigating
Replaces "keep on" with "persist in", emphasizing determination and resilience in the face of challenges.
pursue the investigation
Focuses on the action of "pursuing" the investigation, highlighting the active and goal-oriented nature of the inquiry.
press on with the investigation
Replaces "keep on" with "press on with", suggesting urgency and a determined effort to move forward.
keep digging into
Employs "keep digging into" to suggest a more in-depth and relentless approach to the investigation.
probe further into
Uses "probe further into" to convey a sense of careful and methodical examination of the subject matter.
stick with the investigation
This phrase stresses commitment and loyalty to the investigative process, replacing "keep on" to stress perseverance.
delve deeper into
Implies a more thorough and profound level of inquiry, focusing on uncovering hidden or obscured information.
not give up on investigating
Expresses a refusal to abandon the investigation, emphasizing resilience and determination to find answers.
FAQs
How can I use "keep on investigating" in a sentence?
You can use "keep on investigating" to encourage continued inquiry, like in the sentence, "Even though we haven't found the answer, we must "keep on investigating"."
What are some alternatives to "keep on investigating"?
Some alternatives include "continue to investigate", "persist in investigating", or "carry on investigating", depending on the desired nuance.
Is "keep on investigating" formal or informal?
"Keep on investigating" leans towards the informal side. For more formal contexts, consider using alternatives such as "continue to investigate".
What is the difference between "keep investigating" and "keep on investigating"?
While both phrases are similar, "keep on investigating" often implies a more persistent or continuous effort. "Keep investigating" is a more general instruction to continue the investigation.
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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
82%
Authority and reliability
4.3/5
Expert rating
Real-world application tested