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
deep idea
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "deep idea" is correct and usable in written English.
It can be used to describe a concept or thought that is profound, insightful, or complex in nature. Example: "The philosopher presented a deep idea about the nature of existence that left the audience in contemplation."
✓ Grammatically correct
News & Media
Academia
Science
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
3 human-written examples
Buried in there, there's a deep idea about communication.
News & Media
In case you missed it, quantum computing depends on a very deep idea: that the world itself is a kind of computer.
News & Media
Liberalism ultimately rests on a deep idea of what people are like.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
This Scottish duo aim to cram deep ideas into light-hearted pop songs.
News & Media
Deep ideas can be conveyed by short lines of symbols precisely selected by a talented artist.
Academia
"Some of the most beautiful and deep ideas of the 20th century come from engineering.
News & Media
But the deep ideas and techniques within were ample reward for the persevering reader.
Science & Research
"He was like a comet lighting up the intellectual sky with his brilliant, deep ideas and his beautiful personality.
Conversely, deep ideas in modern mathematics have been brought to bear on physical questions, yielding beautiful and unexpected results.
Academia
To me, the main point of this problem is to appreciate the deep ideas that we tend to take for granted.
News & Media
Good genre fiction can show you that deep ideas, like what's found in good art, aren't nearly as far away as they sometimes look, and that they're always worth reaching for.
News & Media
Expert writing Tips
Best practice
Use "deep idea" to introduce core concepts or arguments within your work. Doing so indicates to your audience that what follows is foundational to the topic at hand.
Common error
Avoid using "deep idea" to describe trivial or self-evident concepts. This dilutes the phrase's impact and can make your writing sound pretentious. Reserve it for ideas that genuinely warrant the description.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "deep idea" functions as a noun phrase where the adjective "deep" modifies the noun "idea". It describes the quality of the idea, indicating its profundity, complexity, or significance. As Ludwig AI suggests, the expression is correct.
Frequent in
News & Media
33%
Academia
33%
Science
33%
Less common in
Formal & Business
0%
Wiki
0%
Encyclopedias
0%
Ludwig's WRAP-UP
The phrase "deep idea" is a grammatically sound and usable expression that signifies a profound, insightful, or complex concept. Ludwig AI confirms its correctness. It's most commonly found in news, academic, and scientific contexts and is used to emphasize the significance of the idea being presented. While versatile, it's best reserved for ideas that genuinely warrant the description to avoid diluting its impact. Alternatives like "profound concept" or "insightful thought" can be used depending on the specific nuance you wish to convey.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
profound concept
Emphasizes the intellectual depth and significance of the idea.
insightful thought
Highlights the clarity and penetrating understanding the idea provides.
complex notion
Focuses on the intricate and multifaceted nature of the idea.
fundamental principle
Suggests the idea is a basic, underlying truth or concept.
groundbreaking theory
Implies the idea is innovative and potentially transformative.
radical proposition
Suggests the idea challenges conventional wisdom or established norms.
far-reaching implication
Emphasizes the broad and significant consequences of the idea.
sublime concept
Highlights the elevated and awe-inspiring nature of the idea.
weighty consideration
Focuses on the importance and seriousness of the idea.
abstruse theory
Highlights the difficulty and obscurity in grasping the idea.
FAQs
How can I use "deep idea" in a sentence?
You can use "deep idea" to describe a profound or complex concept. For example: "Quantum computing depends on a very "deep idea: that the world itself is a kind of computer."
What are some alternatives to "deep idea"?
Alternatives include "profound concept", "insightful thought", or "complex notion", depending on the specific nuance you want to convey.
Is it appropriate to use "deep idea" in formal writing?
Yes, "deep idea" is appropriate for formal writing when referring to significant or complex concepts, especially in academic or philosophical contexts.
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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested