suppose to know

USAGE SUMMARY

The phrase "suppose to know" is not correct in standard written English.
The correct phrase is "supposed to know," which indicates an expectation or obligation to have knowledge about something. Example: "You are supposed to know the rules of the game before you start playing."

⚠ May contain grammatical issues

Human-verified examples from authoritative sources

Exact Expressions

8 human-written examples

The Germans weren't suppose to know anything about this treaty, but they had way of getting things.

The New Yorker

Nesson was intimating jury nullification, an "adult" word the jury here wasn't suppose to know they could use.

The Guardian - Music

"Aren't you suppose to know who you're working with?" rejoined Dillet.

TechCrunch

Using these known values, we can estimate a good discriminant function without active learning, but here we suppose to know only the values of outputs gotten by sampling.

Pacific Journal of Mathematics for Industry

How are they suppose to know what they're watching?

Vice

And how the hell was I suppose to know Ritchie Venus was the original author of the song "Forbidden Planet"?

Vice

Human-verified similar examples from authoritative sources

Similar Expressions

52 human-written examples

Nobody's supposed to know that.

The New Yorker

How am I supposed to know?

Independent

I was Just Supposed to Know.

The Guardian - Opinion

Not that he was supposed to know.

The Guardian - Film

Nobody is supposed to know everything.

The Guardian - Books

Expert writing Tips

Best practice

Always use "supposed to know" with the '-d' ending to ensure grammatical correctness. Using "suppose to know" is a common error that should be avoided in formal writing.

Common error

The most common mistake is omitting the '-d' at the end of "supposed". Double-check your writing to ensure you're using "supposed to know" and not the incorrect "suppose to know".

Linguistic Context

The phrase "suppose to know" functions as part of a verb phrase expressing expectation or obligation. However, it's grammatically incorrect due to the missing '-d' in 'supposed'. As Ludwig AI explains, the correct form is "supposed to know".

Expression frequency: Missing

Frequent in

Science

0%

News & Media

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Formal & Business

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Less common in

Science

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News & Media

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Formal & Business

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Ludwig's WRAP-UP

In summary, while the phrase "suppose to know" may appear in writing, it's crucial to recognize it as grammatically incorrect. The correct form is "supposed to know", which conveys an expectation or obligation to possess knowledge. As Ludwig AI highlights, using the correct form ensures clarity and credibility in your writing. Remember to include the '-d' to avoid this common error. Although examples exist where the phrase is used, this doesn't change the fact that it is wrong; you should always prefer the proper grammar.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

Supposed to know

Corrects the grammatical error by adding the 'd' to 'suppose'.

Expected to know

Replaces "suppose" with a more formal and grammatically sound alternative.

Meant to know

Indicates an intended understanding or awareness.

Ought to know

Suggests a moral or logical obligation to possess the knowledge.

Should know

Expresses an expectation based on reason or circumstance.

Presumed to know

Implies that knowledge is assumed based on certain conditions.

Understood to know

Indicates a mutual but perhaps unspoken agreement about knowledge.

Required to know

Specifies a formal requirement or necessity for knowledge.

Expected to understand

Shifts the focus to comprehension rather than just knowing.

It is assumed that one knows

Changes the sentence structure to passively express assumed knowledge.

FAQs

What is the correct way to say "suppose to know"?

The correct phrase is "supposed to know". The word "supposed" requires the -d ending to be grammatically correct.

What does "supposed to know" mean?

It means that someone is expected or required to have knowledge of something. It implies an obligation or expectation to know something.

Are there alternatives to saying "supposed to know"?

Yes, you can use alternatives like "expected to know", "meant to know", or "ought to know" depending on the context.

How can I remember to use "supposed to know" correctly?

Think of "supposed" as needing that final "d" like other past participles ending in -ed. It's similar to how you'd never say "I use to do that" without the "d".