could have forgotten

USAGE SUMMARY

The phrase "could have forgotten" is correct and usable in written English.
It is typically used to express a possibility or speculation about someone forgetting something in the past. Example: "She could have forgotten to send the email, which is why we haven't received a response yet."

✓ Grammatically correct

News & Media

Science

Human-verified examples from authoritative sources

Exact Expressions

30 human-written examples

I don't know how I could have forgotten.

The New York Times - Magazine

But really who, apart from Freddy's terrified and bewildered new victims, could have forgotten?

The New York Times

I want to think she didn't – it seems impossible that I could have forgotten that.

The Guardian - Lifestyle

Our mother could have forgotten any of us, and one day she surely will.

The New York Times

It's astonishing that any national leader could have forgotten what happened when Congress tried this before.

The New York Times

Later, disbelieving that she could have forgotten the incident, Tan calls her mother to ask if it happened.

The Guardian - Books

Human-verified similar examples from authoritative sources

Similar Expressions

30 human-written examples

Could she have forgotten — how could she have forgotten?

The New Yorker

How could I have forgotten?

The New York Times - Magazine

How could I have forgotten the kiss?

The Guardian

How could I have forgotten all this?

The Guardian - TV & Radio

How could everyone have forgotten the stolen girl so soon?

The New Yorker

Expert writing Tips

Best practice

When using "could have forgotten", consider the context to ensure it accurately conveys the intended level of possibility and past action. Use it to express a plausible explanation for a past oversight or memory lapse.

Common error

Avoid using "could have forgotten" when you mean to express regret that something wasn't forgotten. "Should have forgotten" implies a desire that the forgetting had occurred, whereas "could have forgotten" simply suggests it was possible to forget.

Linguistic Context

The phrase "could have forgotten" functions as a modal verb phrase expressing a possibility or speculation about a past event. The modal verb "could" indicates potential, while "have forgotten" refers to a completed action in the past. Ludwig AI confirms its usage in various contexts.

Expression frequency: Common

Frequent in

News & Media

60%

Science

28%

Formal & Business

12%

Less common in

Academia

0%

Encyclopedias

0%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "could have forgotten" is a grammatically correct and commonly used modal verb phrase that expresses a possibility regarding a past memory lapse. As Ludwig AI confirms, it's versatile and fits well in news, scientific discussions, and general conversations. While offering plausible explanations, ensure to avoid confusion with similar phrases such as "should have forgotten", which conveys regret rather than possibility. Remember that while "could have forgotten" is common, there are many alternative phrases that can be used to achieve the same goal.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

might have forgotten

Expresses a similar level of possibility regarding forgetting, but with a slightly different modal verb.

might not have remembered

Similar in meaning but emphasizes the lack of remembering rather than the act of forgetting.

may have overlooked

Suggests a failure to notice something, implying a type of forgetting through inattention.

they may not have remembered

Similar to 'might not have remembered,' highlighting the uncertainty of recall.

perhaps overlooked

Similar to 'may have overlooked,' but with emphasis on possibility.

it's possible they forgot

Shifts the focus to the possibility of forgetting, using a more direct statement.

possibly neglected to remember

A more formal phrasing indicating a potential failure to recall something.

one might have overlooked

Suggests a failure to notice something, implying a type of forgetting through inattention. The subject of the action changes to 'one'.

conceivably did not recall

Emphasizes the potential lack of recollection, suggesting it's within the realm of possibility.

it's conceivable they didn't recall

Focuses on the conceivability of not recalling, rather than the direct action of forgetting.

FAQs

What does "could have forgotten" imply?

The phrase "could have forgotten" suggests a possibility that someone forgot something in the past. It indicates a plausible explanation for a memory lapse or oversight, rather than a certainty.

How can I use "could have forgotten" in a sentence?

You can use "could have forgotten" to express a potential reason for a past event. For example, "She "might have forgotten" her keys, which is why she was locked out".

What are some alternatives to "could have forgotten"?

Alternatives include "may have overlooked", "might not have remembered", or "it is possible they forgot", depending on the specific nuance you wish to convey.

What's the difference between "could have forgotten" and "should have forgotten"?

"Could have forgotten" expresses a possibility that someone forgot something, while "should have forgotten" expresses a regret that something wasn't forgotten. The first describes a potential memory lapse, while the second expresses a desire for amnesia.