must be thinking

USAGE SUMMARY

"must be thinking" is correct and usable in written English.
You can use it when you are talking about an opinion or deduction that you have made about another person's thought process. For example, "He seemed a bit confused; he must be thinking about what to do next."

✓ Grammatically correct

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

Spoiled, you must be thinking.

The New York Times

You must be thinking of San Francisco.

The New York Times

Great, Reggie Miller must be thinking.

The New York Times - Sports

The author must be thinking of something and I'm curious".

The New York Times

No, you must be thinking of someone else.

The Guardian - Film

I do wonder what their watching parents must be thinking.

The Guardian - TV & Radio

Surely, you must be thinking, Bugliosi cracks the case.

The New York Times - Books

Parko must be thinking Slater must be on work experience.

The Guardian - Sport

That is exactly what male king penguins must be thinking.

The New York Times - Science

She must be thinking, "Mommy went to Daddy...

The New York Times - Magazine

That Van der Vaart, he must be thinking.

The Telegraph

Expert writing Tips

Best practice

Vary your phrasing to avoid repetition. Use alternatives like "is probably thinking" or "is likely wondering" to convey similar meanings with subtle differences in emphasis.

Common error

Avoid using "must be thinking" when you lack concrete evidence or contextual clues. Overusing it can make your writing sound presumptuous or speculative, potentially weakening your argument. Ensure there's a logical basis for your inference.

Linguistic Context

The phrase "must be thinking" functions as a modal expression used to express a deduction or inference about someone's current thoughts. It implies a high degree of certainty based on available evidence or context. Ludwig's examples illustrate this function, showing how it is used to interpret the thoughts of individuals or groups in various situations.

Expression frequency: Very common

Frequent in

News & Media

97%

Formal & Business

1%

Science

1%

Less common in

Encyclopedias

0%

Wiki

0%

Social Media

1%

Ludwig's WRAP-UP

In summary, "must be thinking" is a versatile phrase used to infer someone's thoughts with a high degree of certainty based on context or evidence. Ludwig AI confirms its grammatical correctness and provides numerous examples from credible sources like The New York Times and The Guardian, demonstrating its prevalence in news and media. While its register is generally neutral, it's essential to use it judiciously, ensuring sufficient evidence backs your inference to avoid sounding presumptuous. Alternatives such as "is probably thinking" or "is likely wondering" can offer nuanced variations in meaning.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

is probably thinking

Replaces "must be" with "is probably", indicating a slightly lower degree of certainty about the thought.

is likely thinking

Similar to "is probably thinking", suggesting a high probability but not a certainty.

is undoubtedly thinking

Replaces "must be" with "is undoubtedly", suggesting a very high degree of certainty.

is probably wondering

Substitutes "thinking" with "wondering", implying a state of pondering or questioning.

is bound to be thinking

Suggests that it is inevitable or very likely that someone is having a certain thought.

may well be thinking

Uses "may well be" to express a possibility with a reasonable degree of confidence.

might be thinking

Indicates a possibility, but with a slightly lower level of certainty than "must be thinking".

it's reasonable to assume they're thinking

Emphasizes the logical basis for assuming someone's thoughts.

one can imagine they're thinking

Introduces a more subjective perspective, inviting the listener to imagine the thought process.

I imagine they're thinking

Indicates that the thought is based on the speaker's imagination or personal conjecture.

FAQs

How can I use "must be thinking" in a sentence?

Use "must be thinking" to express a logical deduction or inference about someone's thoughts based on the current situation. For example, "After that performance, the coach "must be thinking" about changing the lineup."

What are some alternatives to "must be thinking"?

You can use alternatives like "is probably thinking", "is likely wondering", or "may well be thinking" depending on the level of certainty you want to convey. Each alternative offers a slightly different nuance in expressing the inferred thought process.

Is "must be thinking" formal or informal?

"Must be thinking" is suitable for both formal and informal contexts, although it is used more frequently in neutral and news-oriented contexts. For more formal writing, consider alternatives like "one can reasonably assume" or "it is logical to infer".

When should I avoid using "must be thinking"?

Avoid using "must be thinking" when you have no evidence or context to support your inference. In such cases, it's better to use more speculative phrases like "might be thinking" or "could be wondering" to indicate a lower level of certainty.