must be heavy

USAGE SUMMARY

The phrase "must be heavy" is correct and usable in written English.
It can be used when speculating about the weight of an object or situation based on context or appearance. Example: "That box must be heavy; it looks quite large and full."

✓ Grammatically correct

Human-verified similar examples from authoritative sources

Similar Expressions

60 human-written examples

Therefore, he must be 53.

The New York Times

Children must be 10+.

The Guardian - Travel

It must be 50.

The Washington Post

Attendees must be 18+.

Harvard University

You must be 21 to enter.

The New York Times

Entrants must be 18 or over.

Independent

Must be 18 or over.

The New York Times - Travel

Must be 21 or older.

The New York Times - Arts

Then there must be 50.

The New York Times

"And they must be 400's".

The New York Times - Style

That must be 120 words a minute".

The Guardian - Opinion

Expert writing Tips

Best practice

Use "must be heavy" when you want to express a logical deduction or strong assumption based on available evidence, such as size or appearance. For instance, "That package must be heavy; it's marked fragile and requires two people to lift."

Common error

Avoid using "must be heavy" without any supporting information. Saying "That must be heavy" without indicating why you think so can make your statement sound abrupt or lacking in justification. Always provide a reason or observation that leads to your conclusion.

Linguistic Context

The phrase "must be heavy" functions as an assessment or deduction about the weight of an object. It indicates a conclusion based on observation or prior knowledge, as confirmed by Ludwig's assessment of its correctness. The phrase expresses the speaker's belief that something is heavy, inferred from cues like size or difficulty in lifting.

Expression frequency: Missing

Frequent in

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Less common in

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Ludwig's WRAP-UP

In summary, the phrase "must be heavy" is a grammatically sound and commonly understood way to express a deduction or assumption about the weight of something. According to Ludwig, it is considered correct and usable. While there are no direct examples available to analyze its usage across different contexts, it is versatile enough for neutral communication. To avoid overusing it, remember to provide context and consider alternatives like "likely weighs a lot" or "probably quite heavy" depending on the level of certainty.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

likely weighs a lot

Changes "must be" to "likely weighs", indicating a probability rather than a deduction.

probably quite heavy

Replaces "must be" with "probably", softening the assertion and using "quite" to intensify "heavy".

seems weighty

Uses "seems" to convey an impression and replaces "heavy" with "weighty", a more formal synonym.

appears to be heavy

Uses "appears" to suggest that the weight is based on visual assessment.

gives the impression of being heavy

Expresses the perceived weight indirectly through the impression it gives.

it feels like it might be heavy

This phrase introduces a tactile element to the assessment of weight, suggesting the speaker has attempted to lift or move the object.

one would assume it's heavy

Introduces a hypothetical observer who would make the assumption about heaviness.

has the look of something heavy

Focuses on the visual characteristics that suggest heaviness.

you'd think it's heavy

This phrase introduces a common-sense element to the assessment of weight, suggesting the speaker believes most people would agree with the assessment.

it seems to carry some weight

Metaphorically uses "carry some weight" to suggest that something has importance or influence, in addition to physical weight.

FAQs

How can I rephrase "must be heavy" to sound more certain?

To express greater certainty than "must be heavy", consider using phrases like "is definitely heavy" or "is certainly heavy". These alternatives convey a stronger sense of conviction.

What's the difference between "must be heavy" and "might be heavy"?

"Must be heavy" suggests a strong deduction based on available evidence, while "might be heavy" indicates a possibility or uncertainty. Use "might be heavy" when you're less confident about your assessment.

When is it appropriate to use the phrase "must be heavy"?

It's appropriate to use "must be heavy" when you have a reason to believe something is heavy, such as its size, material, or the effort required to move it. For example, "That safe must be heavy given its size and the steel construction".

What are some informal alternatives to "must be heavy"?

For more casual contexts, you could use phrases like "looks like it weighs a ton" or "that's gotta be heavy". These alternatives are suitable for informal conversations.