should have know

USAGE SUMMARY

"should have know" is not grammatically correct.
The correct form would be "should have known." This phrase is used to express regrets or missed opportunities in the past. An example would be: "I should have known that the event was cancelled before I left my house."

⚠ May contain grammatical issues

News & Media

Human-verified examples from authoritative sources

Exact Expressions

11 human-written examples

They should have know what they were doing, even if they did not.

The New York Times

you're obviously right, dkg, and I should have know better before making my comment about dspam.

Columbia University

Sarkozy should have know better than to put the Elysée palace and France's national symbols up for hire.

The Guardian - Opinion

We now know what we should have know then not only was that evacuation wrong, but Japanese Americans were and are loyal Americans….

Encyclopedia Britannica

So it is safe to assume that China was not in negotiating mode, and that, unless Beijing was being set up as the fall guy, Obama, Brown, Miliband et al should have know this, and negotiated accordingly.

The Guardian - Opinion

The Home Office should have know about these extra places when it made its announcement two months ago but it didn't because it lost the submission from a council saying it could provide the places.

The Guardian

Human-verified similar examples from authoritative sources

Similar Expressions

49 human-written examples

Steve should have known.

The New Yorker

He should have known.

The New Yorker

We should have known.

The New York Times

I should have known.

Forbes

Brian May should have known better.

Independent

Expert writing Tips

Best practice

Always use the correct past participle form of the verb "know", which is "known", when using the phrase "should have" to avoid grammatical errors.

Common error

A common mistake is using the base form of the verb after "should have". Remember that "have" requires a past participle, so always use "known" instead of "know" after "should have".

Linguistic Context

The phrase "should have know", while grammatically incorrect, functions as a way to express regret or expectation about something in the past. Ludwig AI identifies this as a common error, with correct usage being "should have known".

Expression frequency: Common

Frequent in

News & Media

77%

Encyclopedias

8%

Academia

8%

Less common in

Formal & Business

0%

Science

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, while the phrase "should have know" appears with some frequency, it's grammatically incorrect. The correct form is "should have known", used to express regret or expectation regarding past events. Ludwig AI highlights this discrepancy. It's important to use the correct past participle "known" in formal writing. Although commonly found in News & Media, opting for the grammatically sound version enhances clarity and credibility. Alternatives like "ought to have known" and "should have realized" offer similar meanings while maintaining grammatical accuracy.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

should have realized

Replaces "know" with "realized", emphasizing comprehension and understanding.

ought to have known

Substitutes "should" with "ought to", indicating a moral obligation or expectation of knowledge.

should have been aware

Replaces "know" with "been aware", highlighting a state of consciousness or recognition.

should have understood

Uses "understood" instead of "know" to indicate a deeper level of comprehension.

should have anticipated

Replaces "know" with "anticipated", focusing on foreseeing or predicting something.

should have expected

Uses "expected" instead of "know" to indicate that something was predictable.

should have foreseen

Substitutes "know" with "foreseen", suggesting the ability to see or predict something in the future.

should have recognized

Replaces "know" with "recognized", emphasizing the identification of something previously unknown.

should have gathered

Uses "gathered" instead of "know" to imply collecting information to form a conclusion.

should have been informed

Replaces "know" with "been informed", highlighting the act of receiving information.

FAQs

How do I properly use "should have known" in a sentence?

Use "should have known" to express regret or expectation about something that was not realized. For example, "I "should have known" it would rain because the forecast predicted it."

What's the difference between "should have know" and "should have known"?

"Should have know" is grammatically incorrect. The correct form is ""should have known"", which uses the past participle of the verb "know".

Are there alternatives to "should have known" that convey a similar meaning?

Yes, you can use phrases like "ought to have known", "should have realized", or "should have understood" to express similar ideas.

In what situations is it appropriate to use "should have known"?

Use "should have known" in situations where someone failed to recognize something they were expected to, or where you regret not recognizing something earlier. It implies a degree of negligence or a missed opportunity.