leave behind

phrasal verb·3 senses·particle behind

Meanings

1

Forget or fail to take something with you when you go

Why “behind”? Everyone else moves on. What stays behind is left there.

I left my keys behind.
I forgot to take my keys with me.
She left her scarf behind on the train.
She forgot to take her scarf with her from the train.
2

Surpass someone in development or achievement

Why “behind”? One person or thing follows behind another on the same path.

The new model leaves rivals behind.
The new model surpasses its rivals.
This runner leaves the others behind on hills.
This runner surpasses the others on hills.
3

Depart from someone, ending a relationship or association

He left his old life behind.
He departed from his old life entirely.
Maya left the city behind and moved north.
Maya departed from the city completely.

Don't confuse with

leave behindleave aside

Leave behind means forget or fail to take something with you when you go. Leave aside means set a topic aside temporarily to focus on something else.

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I left my keys behind. What does it mean?

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