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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
I didn't completely understand
Grammar usage guide and real-world examplesUSAGE SUMMARY
"I didn't completely understand" is a correct and usable sentence in written English.
You might use it if you are trying to politely express that you don't understand something but have some level of understanding. For example, you might say, "I didn't completely understand what you were saying about the new policy, could you explain it again?".
✓ Grammatically correct
News & Media
Science
Wiki
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
5 human-written examples
"I didn't completely understand what I was being asked," he said.
News & Media
After a few moments of panting, he gave my mother a wink, a gesture I didn't completely understand, and then he disappeared back where he'd come from.
News & Media
When the day of the interview arrived, I did an excellent introduction, but I didn't completely understand all of the questions.
Science & Research
But I was suffering under the weight of "perfection" in a way that even I didn't completely understand.
News & Media
Shen up now to get the best of VICE Canadiddelivered straight to your in'tx.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
53 human-written examples
Girardi said: "I don't completely understand what he was doing lifting.
News & Media
"I don't completely understand Garry, but he has huge reserves of energy and talent," Ludmila Alexeeva, a sixties-era dissident and a leader of the Moscow Helsinki Group, a predominant human-rights organization, said.
News & Media
"As a non-American, I don't completely understand it, but there is a phenomenon in the U.S., the latest and the greatest," said Dr. Henrik Malchau, who practiced as an orthopedic surgeon in Sweden before going to Massachusetts General Hospital in Boston.
News & Media
I don't completely understand this fascination with in-ear headphones.
News & Media
I don't completely understand it, but horses seem to be the key.
News & Media
Them: "Why do you act like that?" Me: "I don't completely understand -- act like what?" Them: "Like a girl!
News & Media
Expert writing Tips
Best practice
Use "I didn't completely understand" to politely express a lack of full understanding, encouraging further clarification. It acknowledges some level of comprehension while seeking more information.
Common error
Avoid using "I didn't completely understand" when you understood nothing at all. In such cases, "I didn't understand" or "I didn't get it" are more appropriate.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "I didn't completely understand" functions as a declarative statement expressing a lack of full comprehension. Ludwig examples show it used to politely indicate needing further clarification. It acknowledges a partial understanding while seeking more complete information.
Frequent in
News & Media
60%
Science
20%
Wiki
20%
Less common in
Formal & Business
0%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
The phrase "I didn't completely understand" is a polite way to express partial comprehension and a need for further clarification. Ludwig indicates this phrase is grammatically sound and commonly used in various contexts, particularly in news media. While generally neutral in register, it can be adapted for more formal or informal settings with alternatives like "I didn't fully grasp" or "I didn't quite get". When using this phrase, it's crucial to follow up with specific questions to guide the speaker and facilitate a more complete understanding.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
I didn't fully grasp
Emphasizes a lack of complete understanding, focusing on comprehension.
I didn't entirely comprehend
Highlights a partial understanding, suggesting some elements were grasped.
I didn't quite get
Offers a more casual way to express a lack of full understanding.
I failed to fully understand
Focuses on the failure to achieve complete comprehension.
My understanding was incomplete
States directly that the understanding was not whole or finished.
I had a partial understanding
Highlights the presence of some understanding mixed with confusion.
I only partially understood
Emphasizes that only a portion was understood, implying a larger part was missed.
I lacked complete comprehension
Uses more formal language to state the absence of full understanding.
I wasn't entirely clear on
Suggests a lack of clarity rather than complete lack of understanding.
My perception was not complete
Focuses on the incompleteness of the perception or awareness of something.
FAQs
What does "I didn't completely understand" mean?
The phrase "I didn't completely understand" indicates that you grasped some aspects of something but not all of it. It suggests partial comprehension and implies a need for further explanation.
How can I ask for clarification after saying "I didn't completely understand"?
You can follow up with specific questions like, "Could you elaborate on...?" or "I understood X, but I'm unclear about Y." Being specific helps the speaker focus their explanation.
Which is more polite, "I didn't understand" or "I didn't completely understand"?
"I didn't completely understand" is generally more polite as it acknowledges some level of comprehension. "I didn't understand" might sound like you weren't paying attention or that the explanation was entirely unclear. You can also use alternatives like "I didn't fully understand".
What are some alternatives to "I didn't completely understand"?
Depending on the context, you could use phrases like "I didn't fully grasp", "I didn't entirely comprehend", or "I didn't quite get". The best choice depends on the specific nuance you want to convey.
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested