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
are indeed sufficient
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "are indeed sufficient" is correct and usable in written English.
You can use it to emphasize that something meets the necessary requirements or standards. Example: "The resources we have gathered are indeed sufficient to complete the project on time."
✓ Grammatically correct
Science
News & Media
Formal & Business
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
9 human-written examples
It has been conjectured that these necessary conditions are indeed sufficient.
Science
Here, we show that OCT3/4 and KLF4 are indeed sufficient to induce pluripotency from human NSCs within a two week time frame and are molecularly indistinguishable from human ES cells.
Science
The following study was performed to determine if the changes in chemical profiles associated with immunostimulation are indeed sufficient to alter nestmate social interactions.
Science
If these data are indeed sufficient, they will be used as additional information to describe the background characteristics of the study population, and to control for confounders.
Science
If lower doses are indeed sufficient, then the administration of high doses may only exacerbate side effects without improving the therapeutic index.
Science
Ectopic expression of Cyclin A in confluent cultures overcomes G1-arrest indicating that increased Cyclin A levels are indeed sufficient to bypass contact-inhibition.
Human-verified similar examples from authoritative sources
Similar Expressions
50 human-written examples
It is indeed sufficient to prove that the inequalities in display (190) still hold.
A tree of height 9 and constant branching factor 100 has (100^9 = 10^{18}) leaves, which is indeed sufficient.
Science
The results show that the simple task was indeed sufficient to evoke the prefrontal activation of interest, add to the information on functional dorsal ventral specialization in prefrontal cortex and provide support for a prefrontal parietal monitoring manipulation network.
Science
Tests using microbial cells from Río Negro river (Patagonia-Argentina) show that a low-order approximation of the diffusional process is, indeed, sufficient to obtain a good model fit.
Although first evidence links these gender-specific effects of stress to stress-induced changes in cortisol, whether elevated cortisol is indeed sufficient to boost risk-taking, whether a potential cortisol effect depends on simultaneous noradrenergic activation, and whether cortisol and noradrenergic activation exert distinct effects on risk-taking in men and women is unknown.
Science
Expert writing Tips
Best practice
Use "are indeed sufficient" to affirm that specific conditions, resources, or qualifications meet the required criteria, adding emphasis to the adequacy.
Common error
Avoid using "indeed" excessively in your writing. While it adds emphasis, overuse can make your writing sound unnatural or repetitive. Consider alternatives like "certainly", "truly", or simply omitting it for a more streamlined expression.
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "are indeed sufficient" primarily functions as a predicate adjective, modifying the subject by asserting that it meets the required criteria or standards. Ludwig AI confirms its grammatical correctness and common usage.
Frequent in
Science
70%
News & Media
15%
Formal & Business
15%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "are indeed sufficient" is a grammatically correct and commonly used expression that serves to emphasize the adequacy of something. Ludwig AI confirms its legitimacy and provides various examples across diverse fields, mostly science and news. The phrase is suitable for both neutral and formal writing contexts and aims to convey assurance or confirmation. Alternatives like "are certainly sufficient" or "are undoubtedly sufficient" can be used for similar emphasis. Remember to avoid overuse to maintain a natural writing style.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
are undoubtedly sufficient
Replaces "indeed" with "undoubtedly", strengthening the affirmation of sufficiency.
are certainly sufficient
Substitutes "indeed" with "certainly", highlighting the confidence in the sufficiency.
are truly sufficient
Replaces "indeed" with "truly", emphasizing the genuineness of the sufficiency.
are clearly sufficient
Emphasizes the obviousness of the sufficiency.
are definitely sufficient
Similar to "certainly sufficient" but may imply a stronger, more assertive tone.
are absolutely sufficient
Expresses a complete and unconditional sense of sufficiency.
are more than sufficient
Indicates that the quantity or quality exceeds what is necessary.
are adequate
Uses a different term for sufficiency, focusing on meeting a minimum standard.
suffice
A more concise and formal way of saying "are sufficient".
are ample
Implies a generous or abundant level of sufficiency.
FAQs
How can I use "are indeed sufficient" in a sentence?
Use "are indeed sufficient" to emphasize that certain factors or elements meet the necessary requirements. For example: "The data and resources we have are indeed sufficient to draw a conclusion."
What are some alternatives to "are indeed sufficient"?
You can use alternatives such as "are certainly sufficient", "are undoubtedly sufficient", or "are truly sufficient" to convey a similar meaning with slightly different emphasis.
Is "are indeed sufficient" formal or informal?
"Are indeed sufficient" is suitable for both formal and semi-formal contexts. The level of formality largely depends on the surrounding text and the overall tone of the piece.
What's the difference between "are sufficient" and "are indeed sufficient"?
While both phrases indicate adequacy, "are indeed sufficient" adds extra emphasis and affirmation compared to the simple statement "are sufficient". The addition of "indeed" reinforces the idea that the requirements have been met.
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
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested