Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
Must be nervous
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "Must be nervous" is correct and usable in written English.
It can be used to express an assumption or speculation about someone's emotional state, particularly in situations where they might feel anxious or apprehensive. Example: "Looking at the crowd before her speech, she must be nervous."
✓ Grammatically correct
News & Media
Sport
General Conversation
Alternative expressions(1)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
8 human-written examples
He must be nervous".
News & Media
Several of them must be nervous.
News & Media
"Then you leave the office and somebody says: 'Hey, dude, you must be nervous.
News & Media
He went on, "Every time people see somebody's hand shake when he putts, they think he must be nervous.
News & Media
"I must be nervous, because I'm sick to my stomach," Mrs. Solomon, a nurse practitioner from Worcester, said.
News & Media
Do say: "I know you must be nervous up there, but I thought you were brilliant!" (© A Dixon) or: "Who cares?
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
52 human-written examples
Must be getting nervous.
News & Media
JIANG ZEMIN must be a nervous man.
News & Media
The ruling ayatollahs must be feeling nervous.
News & Media
"He must be as nervous as we are but he helps you keep it together.
News & Media
"It is very hard for her - she must be incredibly nervous The judges had all worked together for six series and she is new and on her own".
News & Media
Expert writing Tips
Best practice
When speculating about someone's nervousness, consider the context and avoid making assumptions that could be insensitive. Use "Must be nervous" when you have reasonable evidence or clues, such as a high-pressure situation or visible signs of unease.
Common error
Avoid using "Must be nervous" repeatedly in your writing, as it can make your text sound repetitive and monotonous. Vary your language by using synonyms or alternative expressions to convey similar meanings. Instead of saying "He must be nervous", try something like "He appears anxious" or "He seems on edge".
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "Must be nervous" functions primarily as a modal expression used to convey a deduction or assumption about someone's emotional state. It suggests a high degree of certainty based on available evidence or context. Ludwig AI validates its consistent usage in expressing such inferences.
Frequent in
News & Media
30%
Sport
25%
General Conversation
15%
Less common in
Encyclopedias
10%
Science
10%
Formal & Business
10%
Ludwig's WRAP-UP
In summary, the phrase "Must be nervous" serves as a common and grammatically correct expression used to infer or speculate about someone's feelings of anxiety. As Ludwig AI confirms, it appears across diverse sources, ranging from news media to casual conversations, indicating its versatility. To maintain writing variety, alternatives such as ""seems anxious"" or ""is likely apprehensive"" can be used. It's important to use this expression thoughtfully, being mindful of the context and potential sensitivity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
Has to be anxious
Uses "has to be" implying a requirement or inevitability to the feeling, offering a slightly stronger sense of deduction.
Probably feels anxious
Replaces "must be" with "probably feels", reducing the strength of the assertion to a probability.
Is likely apprehensive
Substitutes "nervous" with "apprehensive" and employs "is likely", softening the certainty of the statement.
Seems anxious
Uses "seems" to convey an impression or observation, rather than a definite conclusion, making it less assertive.
Appears to be on edge
Replaces "nervous" with the idiomatic expression "on edge", suggesting visible tension or unease.
Could be feeling uneasy
Uses "could be" to express possibility, and "uneasy" to convey a general sense of discomfort or anxiety.
Might be stressed
Substitutes "nervous" with "stressed", focusing on the potential cause of the anxiety.
I bet they're worried
Introduces a personal opinion or speculation using "I bet", and substitutes "nervous" with "worried".
Conceivably feels pressured
Uses "conceivably" to suggest possibility, and "pressured" to indicate feeling overwhelmed or stressed.
May feel unsettled
Replaces the original expression with "may feel", indicating uncertainty, and substitutes "nervous" with "unsettled", suggesting a lack of composure.
FAQs
What does it mean to say someone "Must be nervous"?
Saying someone "Must be nervous" suggests you believe they are likely feeling anxious or uneasy, often due to a specific situation or event. It's an assumption based on context and observable behavior.
When is it appropriate to use the phrase "Must be nervous"?
It's suitable to use "Must be nervous" when you observe signs of anxiety or know the person is facing a stressful situation. However, be mindful of the context and avoid using it in a way that could be insensitive or dismissive of their feelings.
What are some alternative ways to express that someone is likely feeling nervous?
You can use alternatives like "seems anxious", "appears to be on edge", or "is likely apprehensive" depending on the context.
Is "Must be nervous" a formal or informal expression?
The phrase "Must be nervous" is generally considered neutral and can be used in both formal and informal contexts. However, the tone of the surrounding text will influence the overall formality.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested