Flee vs Just run away

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

Flee

Top 5,000 (fairly common)C1verb

Just run away

InformalBeyond 10,000 (less common)
Most formal: FleeMost common: Flee
 FleeJust run away
Pronunciation🇬🇧 //fliː//🇺🇸 //fliː//🇬🇧 //dʒʌst rʌn əˈweɪ//🇺🇸 //dʒʌst rʌn əˈweɪ//
MeaningTo run away quickly from danger or trouble.Quickly leave a place.
ExampleThey had to flee the country to escape persecution.When the thunderstorm started, I thought it was best to just run away.
RegisterNeutralInformal
How commonTop 5,000 (fairly common)Beyond 10,000 (less common)
CEFR levelC1-
Part of speechverb
Collocationsflee from danger, flee the scene, flee the countryrun away from home, just run away, run away quickly
Antonymsapproach, confront, stay-
Common mistakesConfused with 'fleeing' as the continuous form., Using 'flee' with inanimate objects instead of people., Incorrectly using 'flee' in non-emergency contexts.Confusing 'run away' with 'run the risk' (which means to take a chance)., Using 'run away' when talking about leaving slowly or casually instead of quickly., Forgetting to emphasize urgency when using the phrase, which can change the meaning.
Usage notesUse 'flee' when discussing situations involving escape or urgency. It’s more formal than 'run away', often used in legal or dramatic contexts.Used when someone should leave quickly, often in a dangerous or uncomfortable situation. More suitable in casual conversations. Not commonly used in formal contexts.

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Flee
Just run away

Frequently asked questions: Flee vs Just run away

What's the difference between Flee and Just run away?

Flee: To run away quickly from danger or trouble. Just run away: Quickly leave a place.

Which is more formal: Flee and Just run away?

Flee is the most formal of these.

Which is more common: Flee and Just run away?

Flee is the most common in everyday English.

Can you show an example of each?

Flee: They had to flee the country to escape persecution. Just run away: When the thunderstorm started, I thought it was best to just run away.

Can I use Flee and Just run away interchangeably?

Not always. Flee and Just run away 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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