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
what was inside
Grammar usage guide and real-world examplesUSAGE SUMMARY
"what was inside" is correct and usable in written English.
It is typically used as a question, asking about the contents or inner workings of something. For example: "What was inside the box he gave me as a gift?" "I was curious about what was inside the mysterious building." "Can you explain to me what was inside the contract before I sign it?".
✓ Grammatically correct
News & Media
Academia
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
56 human-written examples
What was inside?
News & Media
"She let me discover what was inside.
News & Media
Because I didn't see what was inside.
News & Media
"They had no idea what was inside".
News & Media
I remember wondering what was inside it.
News & Media
"It was what was inside his stomach.
News & Media
I had often wondered what was inside Holder Tower.
Academia
Human-verified similar examples from authoritative sources
Similar Expressions
4 human-written examples
What's inside the bunkers?
News & Media
What's inside that barn?
News & Media
What matters most is what's inside.
Academia
It's what's inside that matters.
News & Media
Expert writing Tips
Best practice
When using "what was inside" in questions, ensure correct punctuation, especially question marks. For example: "What was inside the package?"
Common error
Avoid using "what was inside" when referring to abstract concepts or feelings. It's best suited for describing tangible objects or physical spaces. Instead, consider terms like "the essence of" or "the core of" for abstract references.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "what was inside" functions as a relative clause, often acting as a noun phrase that serves as the subject or object of a sentence. Ludwig AI confirms its grammatical correctness and usability. It often introduces a question or statement about the concealed contents or nature of something.
Frequent in
News & Media
60%
Academia
15%
Science
8%
Less common in
Formal & Business
5%
Wiki
4%
Reference
3%
Ludwig's WRAP-UP
In summary, the phrase "what was inside" functions as a versatile relative clause used to inquire about or describe the contents of something, typically a physical object or space. Ludwig AI confirms its grammatical correctness and frequent usage. It appears most commonly in news and media, with a neutral formality. When writing, ensure the context aligns with tangible objects, avoiding abstract applications. Consider alternatives such as "the contents of" or "internal components" in more formal settings.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
what it contained
Emphasizes the action of holding something within.
the secret contents
Highlights that the contents are confidential or unknown.
the contents of
Focuses specifically on the tangible items contained within something.
hidden contents
Implies that the contents were not easily visible or accessible.
the interior of
Highlights the internal space and its features.
internal elements
Emphasizes the inner aspects or parts.
the inner workings of
Refers to the mechanisms or processes within something.
the makeup of
Focuses on the components and structure of something.
the components within
Highlights individual parts located inside.
the thing inside
A more general and less specific alternative.
FAQs
How can I use "what was inside" in a sentence?
You can use "what was inside" to inquire about the contents of something. For example, "Do you know what was inside the mysterious box?" or "I was curious about what was inside the old house."
What's a more formal way to say "what was inside"?
In more formal contexts, consider using phrases like "the contents of" or "the internal components of". For example, instead of "what was inside the device", you might say "the contents of the device" or "the internal components of the device".
Is it correct to say "what's inside" instead of "what was inside"?
Yes, "what's inside" is the contracted form of "what is inside" and is appropriate when referring to present contents. "What was inside" refers to past contents or a past state of being.
What can I say instead of "what was inside" to describe the inner nature of a person?
To describe a person's inner nature, you can use alternatives like "inner self", "true character", or "inner thoughts". For example, "Her actions revealed her true character".
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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested