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leave behind

A2 neutral separable transitive
In simple words

To accidentally forget something somewhere, or to move on so far that you pass others or escape from your past.

Literal meaning: To go away and let something or someone remain in the place you were.

Meanings

1 A2 neutral

To accidentally forget to take something or someone when you leave a place.

"I left my umbrella behind at the restaurant."

Grammar: separable
2 B1 idiomatic neutral

To progress or advance so quickly that others cannot keep up.

"China has left many Western competitors behind in the field of solar panel manufacturing."

Grammar: separable
3 B1 idiomatic neutral

To escape from or stop being affected by a past situation, period, or identity.

"After therapy, she was finally able to leave her anxiety behind."

"We will not go back. We will not leave our values behind."

— Barack Obama, 2012 Democratic National Convention speech
Grammar: separable
4 B1 neutral

To leave a lasting mark, legacy, or effect after departing or dying.

"The artist left behind a collection of over 300 paintings."

Grammar: separable
Usage notes

Very versatile: can be literal (forgetting an object), competitive (surpassing others), or emotional (escaping the past). All senses are common across registers.

Commonly used with

past childhood rivals luggage legacy memories

Forms

Base
leave behind
I/you/we/they
3rd person
leaves behind
he/she/it
Past simple
left behind
yesterday
Past participle
left behind
have + pp
-ing form
leaving behind
continuous

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Synonyms

forget outpace surpass outstrip move on from abandon

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