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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
which I understood
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "which I understood" is correct and usable in written English.
You can use it to refer to something that has been comprehended or grasped in a previous context. Example: "The explanation was clear, and I appreciated the details, which I understood fully."
✓ Grammatically correct
News & Media
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
32 human-written examples
The pimply young man stammered a few sentences, of which I understood nothing except the word "sorry".
News & Media
"The pimply young man stammered a few sentences of which I understood nothing except the word 'sorry'".
News & Media
A long argument began, with stunted English set aside for gusts of Punjabi, not a word of which I understood.
News & Media
He didn't seem very interested in us, or in his bandmates, and he mumbled two jokes, neither of which I understood.
News & Media
"I tried to defend the guy, whether it was Dave Brown or Danny Kanell or Kent Graham, but the questions kept coming, which I understood.
News & Media
I sat on the sofa, occasionally looking out to see what was happening, occasionally looking down at my book, Ulven's "Gravgaver," of which I understood not one word.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
27 human-written examples
"Which I understand, and even respect.
News & Media
JF Which I understand was pretty recent, geologically speaking.
News & Media
They're happy for me, if not bubbling over with questions, which I understand completely.
News & Media
Danczuk said: "They are lobbying for financial incentives to make more money, which I understand.
News & Media
I saw the second cast, which I understand was not as good as the first.
News & Media
Expert writing Tips
Best practice
Use "which I understood" when referring back to a specific noun or concept already mentioned in the sentence or preceding sentences. It provides clarity and avoids ambiguity.
Common error
Avoid using "that" instead of "which" when introducing a nonrestrictive clause. A nonrestrictive clause provides additional information but is not essential to the sentence's meaning. In such cases, "which" is the correct choice, as in, "The concept was complex, which I understood after several readings."
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
"Which I understood" functions as a relative clause, introducing additional information about a previously mentioned noun or concept. The pronoun 'which' connects the clause to the main sentence, while 'I understood' indicates comprehension. Ludwig's examples confirm this usage in various contexts.
Frequent in
News & Media
77%
Science
11%
Formal & Business
6%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "which I understood" is a relative clause used to provide additional information about something previously mentioned, signaling comprehension. Ludwig AI analysis categorizes it as grammatically correct, commonly used in news and media contexts. While alternatives like "that I grasped" or "that I comprehended" exist, the best choice depends on the specific nuance you want to convey. A key writing tip is to use "which" for nonrestrictive clauses, and to understand that "understood" implies past comprehension. Overall, it's a versatile phrase for adding clarity and depth to your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that I comprehended
Emphasizes a complete and thorough understanding, suggesting a higher level of comprehension.
that I grasped
Focuses on the act of seizing or firmly understanding something, implying quick comprehension.
that I recognized
Highlights the act of identifying or acknowledging something, which may include understanding.
that I realized
Focuses on the moment of becoming aware or understanding something, often implying a change in perspective.
that I apprehended
A more formal alternative implying a clear and complete understanding.
that I perceived
Focuses on the act of becoming aware through the senses, suggesting a deeper understanding of something.
that was clear to me
Highlights the clarity of the information, making it easily understandable.
that I knew
Indicates a familiarity or awareness of something, implying previous understanding.
that I was aware of
Highlights the state of being conscious or informed about something, emphasizing knowledge.
that made sense to me
Indicates that something was logical and understandable, aligning with one's existing knowledge.
FAQs
How can I use "which I understood" in a sentence?
The phrase "which I understood" is typically used to add a clause that provides more detail about something previously mentioned. For example: "The explanation was detailed, "which I understood" after careful consideration."
Are there alternatives to "which I understood"?
Yes, depending on the context, you can use phrases like "that I grasped", "that I comprehended", or "that I realized". These alternatives offer slightly different nuances in meaning.
Is it correct to say "that I understood" instead of "which I understood"?
While both can be grammatically correct, "which I understood" is preferred when the clause is nonrestrictive and provides additional, non-essential information. "That I understood" might be more appropriate if the clause is essential to defining the noun it modifies.
What is the difference between "which I understood" and "which I understand"?
"Which I understood" refers to something you comprehended in the past, while "which I understand" refers to something you currently comprehend. The tense of the verb determines the timeframe of understanding.
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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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested