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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
what I forgot
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "what I forgot" is correct and usable in written English. You can use it when referring to something specific that you failed to remember. Example: "I need to recall what I forgot before the meeting." Alternative expressions include "what I left out" and "what slipped my mind."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(5)
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
Guess what I forgot to do.
News & Media
What I forgot was how hard it is to find a phone that works.
News & Media
But as Sue Halpern reports in "Can't Remember What I Forgot," even a few brisk walks per week can have a measurable effect.
News & Media
"Start talking, something will come" – that's his philosophy on creativity, and he has spent his latter years knocking out an impressive number of books, with titles such as What I Forgot to Remember and I Just Remembered.
News & Media
What I forgot is that the most common state for a programmer is a sense of inadequacy.
News & Media
What I forgot is that the bit of the park you have to go through, there's a big fucking hill.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
50 human-written examples
But what I forget, and shouldn't, is what AIDS has given to me.
News & Media
Thanks to age and Momnesia, I'm astonished by what I forget and even more astonished by what I remember.
News & Media
What I learned, forgot and relearned from George Martin, the master of the Beatles sound.
News & Media
What if I forgot to shave my legs?
News & Media
What I'd forgotten to keep up was my flexibility and my stretching".
News & Media
Expert writing Tips
Best practice
Pair the phrase with a preceding verb of cognition like "remember", "realize", or "recollect" to provide clear context for the memory lapse.
Common error
Avoid using the past tense "what I forgot" when referring to a recurring habit or a general state of forgetfulness. In those cases, use the present tense "what I forget". For example, say "I often list what I forget" for habits, but "I finally remembered what I forgot" for a specific past event.
Source & Trust
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "what I forgot" functions as a nominal relative clause (also known as a free relative clause). In this structure, the word "what" acts as both the relative pronoun and its own antecedent, essentially meaning "the thing that". According to Ludwig AI examples, it typically serves as a direct object (e.g., "Guess what I forgot to do") or a subject complement (e.g., "That is what I forgot").
Frequent in
News & Media
65%
Informal
20%
Wiki
10%
Less common in
Science
3%
Formal & Business
1%
Social Media
1%
Ludwig's WRAP-UP
The phrase "what I forgot" is a highly functional and grammatically correct English expression used to identify a memory lapse. It is classified as a nominal relative clause, allowing it to seamlessly integrate into sentences as a subject or object. Based on the data from Ludwig, the phrase is most prevalent in News & Media and personal narratives, where it often introduces a key realization or a missing plot point. While it is universally understood, writers should be mindful of tense consistency, distinguishing between the past-focused "what I forgot" and the habitual "what I forget". For more formal contexts, alternatives like "what I failed to remember" may be more appropriate, though "what I forgot" remains a staple of clear, direct English communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
the thing I forgot
Uses a more explicit noun phrase structure for clarity.
what slipped my mind
Uses an idiomatic expression to sound more casual and less self-blaming.
what I failed to remember
A more formal and slightly more emphatic construction.
what I couldn't recall
Emphasizes the struggle of the memory retrieval process.
what I overlooked
Suggests a failure to notice something rather than a failure to remember it.
what I left out
Focuses on the exclusion of information rather than the mental act of forgetting.
what went out of my head
A colloquial alternative common in British English.
what I neglected to mention
Specifically refers to forgotten information within a conversation or report.
that which I forgot
An archaic or highly literary way to phrase the same concept.
what I omitted
Highly formal, often used in professional or technical writing.
FAQs
How to use "what I forgot" in a sentence?
You can use "what I forgot" as a noun clause to provide detail about a memory lapse. For example, "I realized "what I forgot" only after I reached the airport."
What can I say instead of "what I forgot"?
Depending on the tone, you can use phrases like "what slipped my mind", "what I overlooked", or "what I failed to remember".
Which is correct, "what I forgot" or "what I've forgotten"?
Both are correct, but they carry different nuances. Use "what I forgot" for a completed past action and "what I've forgotten" (present perfect) to emphasize the current state of not knowing the information.
What is the difference between "what I forgot" and "what I forget"?
The difference lies in the tense. "what I forgot" refers to a specific instance in the past, while "what I forget" refers to something you habitually fail to remember.
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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
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested