Anxious vs I can't eat sleep vs Restless vs Troubled

When to use each in English, with meaning, register, and examples.

Anxious

Top 2,000 (common)B2adjective

I can't eat sleep

InformalBeyond 10,000 (less common)

Restless

Top 3,000 (common)

Troubled

Top 2,000 (common)C1adjective
 AnxiousI can't eat sleepRestlessTroubled
Pronunciation🇬🇧 /["/ˈæŋkʃəs/"]/🇺🇸 /["/ˈæŋkʃəs/"]/🇬🇧 //aɪ kɑːnt iːt sliːp//🇺🇸 //aɪ kænt it slip//🇬🇧 //ˈrɛstləs//🇺🇸 //ˈrɛstləs//🇬🇧 /["/ˈtrʌbld/"]/🇺🇸 /["/ˈtrʌbld/"]/
MeaningWorried or nervous about something.I cannot rest or not able to sleepUnable to stay calm or still; always moving.having problems or difficulties
ExampleShe felt anxious about the upcoming exam.After that scary movie, I can't eat sleep tonight.The audience grew restless as the speaker was late.She looked into his troubled face.
RegisterNeutralInformalNeutralNeutral
How commonTop 2,000 (common)Beyond 10,000 (less common)Top 3,000 (common)Top 2,000 (common)
CEFR levelB2--C1
Part of speechadjectiveadjective
Collocationsappear, be, feel, extremely, fairly, very, about, forworry about, overthink things, toss and turn, stay awakerestless night, restless legs, feel restless, restless spiritbe, feel, look, extremely, fairly, very, at, by, be, feel, look, extremely, fairly, very, at, by
Antonymscalm, relaxed, composed-calm, relaxeduntroubled, content, calm
Common mistakesConfusing 'anxious' with 'eager', which means excited or looking forward to something., Using 'anxious' without a preposition; it should be 'anxious about' or 'anxious for'., Thinking 'anxious' always means worry, not recognizing it can imply a strong desire in certain contexts.Confusing the phrase with 'I can't eat' or 'I can't sleep' as separate ideas., Using it in formal situations where a clear statement is needed., Not recognizing it as a fixed expression.Confused with 'restful' which means calm and relaxing., Used incorrectly as a noun; it's an adjective., Assuming it only describes physical restlessness, not emotional.Confusing with 'trouble' as a verb or noun., Using it to describe things that are not serious, like a minor inconvenience., Mistakenly thinking it only refers to emotional issues.
Usage notesUsed when feeling nervous or uneasy about a situation. Generally appropriate in both formal and informal contexts, but in very casual settings, some might use 'worried' instead.This phrase expresses a state of being unable to sleep, often used informally. It's typically used when someone is distressed or has a lot on their mind.Used to describe someone who is fidgety or anxious. Suitable for both formal and informal contexts.Use 'troubled' to describe people or situations facing issues. Avoid using it in overly casual contexts, as it can sound heavy or serious.

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Anxious
I can't eat sleep
Restless
Troubled

Frequently asked questions: Anxious vs I can't eat sleep vs Restless vs Troubled

What's the difference between Anxious, I can't eat sleep, Restless, and Troubled?

Anxious: Worried or nervous about something. I can't eat sleep: I cannot rest or not able to sleep Restless: Unable to stay calm or still; always moving. Troubled: having problems or difficulties

Which is more advanced: Anxious, I can't eat sleep, Restless, and Troubled?

Troubled is the highest level, at C1, on the CEFR scale.

Can you show an example of each?

Anxious: She felt anxious about the upcoming exam. I can't eat sleep: After that scary movie, I can't eat sleep tonight. Restless: The audience grew restless as the speaker was late. Troubled: She looked into his troubled face.

Can I use Anxious, I can't eat sleep, Restless, and Troubled interchangeably?

Not always. Anxious, I can't eat sleep, Restless, and Troubled are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.

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